OTL json schema

gpos.txt

# Lookup type 1: Single Adjustment Positioning

# format 1: Single Positioning Value & format 2: Array of Positioning Values

{
    'format': int,
    'valueRecord': [
        {"a": {"XPlacement": 0, "XAdvance": 10, "YPlacement": 0, "YAdvance": 0},
        ...
        }
  ]

# Lookup type 2: PairPos

# format 1: Adjustments for Glyph Pairs

{
    "format": int,
    "values": {
        "A": {
        "V": -120,
        "W": -100
        ...
    },
        "V": {
        "A": -120,
        ...
    },
        ...
}

# format 2: Class Pair Adjustment

{
    "classes": {
        "kern1.0": ["a", "b"],
        "kern2.0": ["c", "d"],
        "kern2.1": ["e", "f", "g"],
    },
    "values": {
        "kern1.0": {
            "kern2.0": -40,
            "kern2.1": 10
        },
        "kern1.1": {
            "kern2.0": 3,
            "kern2.1": -4,
        }
    }
}


# Lookup type 3:  Cursive Attachment Positioning

# format 1: Cursive attachment

{
    "format": int,
    "records": [
        {"a": ({"x": 0, "y": 0}, {"x": 400, "y": 0}),
        ...
    ]
}

# Lookup type 4: Mark-to-Base Attachment

# format 1: Mark-to-base Attachment Point

{
  "format": int,
  "base": {
      "a": {0: {"x": 300, "y": 300},
            1: {"x": 300, "y": 0},
      ...
  },
  "marks": {
      "gravecomb": {0: {"x": 0, "y": 500}},
      "acutecomb": {0, {"x": 0, "y": 489}},
      "dotaccent": {1: {"x": 9, "y": 0}},
      ...
}

# Lookup type 5: Mark-to-Ligature Attachment

{
    "format": int,
    "ligs": {
        "f_f": [
            {0: {"deviceX": None, "deviceY": None, "x": 100, "y": 100},
             1: {"deviceX": None, "deviceY": None, "x", 0, "y": 0},
             ...
            },
            {0: {"deviceX": None, "deviceY": None, "x": 500, "y" 100},
             1: {"deviceX": None, "deviceY": None, "x", 500, "y": 0},
        ],
        "f_i": [
            ...
        ],
        ...
    },
    "marks": {
      "gravecomb": {0: {"x": 0, "y": 500}},
      "acutecomb": {0, {"x": 0, "y": 489}},
      "dotaccent": {1: {"x": 9, "y": 0}},
      ...
}

Lookup Type 6: Mark-to-Mark Attachment

# Format 1: Mark-to-Mark Attachment

{
  "format": int,
  "mark1": {
      "gravecomb": {0: {"x": 0, "y": 550},
      "acutecomb": {0: {"x": 0, "y": 550},
      ...
  },
  "mark2": {
      "gravecomb": {0: {"x": 0, "y": 700}},
      "acutecomb": {0, {"x": 0, "y": 700}},
      ...
}

# Lookup Type 7: Contextual Positioning

# Format 1: Simple Glyph Contexts

{
    "format": int,
    # NO FONTS IN GOOGLE FONTS!
}


# Format 2: Class based glyph contexts

{
    "format": int,
    # NO FONTS IN GOOGLE FONTS!
}

# Format 3: Coverage based glyph contexts

{
    "format": int,
    # NO FONTS IN GOOGLE FONTS!
}


# Lookup Type 8: Chaining Contextual Positioning

# Format 1:  Simple Glyph Contexts

{
    'format': 1,
     'rules': [
        {
            'backtrack': [],
            'input': ['u101B.alt', 'u103E_u1030'],
            'lookahead': [],
            'lookup_indices': [252, 253]
        }
    ]
}

# Format 2: Class Based Contexts

{
    'format': 2,
    'backtrack_classes': {
        'backtrack1': [
            'uni0939',
            'glyph03032',
            'glyph03036'
        ],
        'backtrack2': [
            'uni0901',
            'uni0902',
            'glyph02844'
        ]
    },
    'input_classes': {
        'input1': ['uni0952']
    },
    'lookahead_classes': {
        'lookahead1': ['uni0000']
    },
    'rules': [
        {
            'backtrack': ['backtrack1'],
            'input': ['uni0952'],
            'lookahead': [],
            'lookup_indices': [16]
        },
        {
            'backtrack': ['backtrack2', 'backtrack1'],
            'input': ['uni0952'],
            'lookahead': [],
            'lookup_indices': [16]
        }
    ]
}


# Format 3: Coverage-based Glyph Contexts

{
    'format': 3,
    'backtrack': [
        ('Vattu.dv',),
        ('Ka.dv',
        'Nga.dv',
        'Tta.dv',
        'SsaTta.dv',
        'PaLaone.dv'),
        ('matraI.dv',)
    ],
    'input': [('Chandrabinduone.dv',)],
    'lookahead': [],
    'lookup_indices': [15]
}

gsub.txt

# Common structure for GPOS, GSUB

{
    "Version": int,
    "Scripts": [
        {
            "Tag": str,
            "DefaultLangSys": {
                "ReqFeatureIndex": int,  # is it always 0xFFFF?
                "FeatureIndices": List[int]
            },
            "LangSysRecords": [
                {
                    "Tag": str,
                    "LangSys": {
                        "ReqFeatureIndex": int,
                        "FeatureIndices": List[int],
                    }
                },
            ]
        },
    ],
    "Features": [
        {
            "Tag": str,
            "FeatureParams": Optional[FeatureParams],
            "LookupListIndices": List[int],
        },
    ],
    "Lookups": [
        {
            "LookupType": int,
            "LookupFlag": List[LookupFlag(Enum)],
            "MarkFilteringSet": int, # index into GDEF.MarkFilteringSets
            "Subtables": [
                # ...
            ],
        },
    ]
}

# GSUB subtables:

# Lookup Type 1: Single Substitution

# Format 1 & 2:

{
    'format': int,
    'subs': {
        'input_glyph': 'output_glyph',
        # ...
    }
}

# Lookup Type 2: Multiple Substitution

# Format 1: Multiple Substitution


{
    'format': 1,
    'subs': {'glyph02651': ['uni0919', 'glyph02969'],
            # ...
    }
}


# Lookup Type 3: Alternate Substitution

# Format 1:

{
    'format': 1,
    'alternates': {'A': ['ordfeminine', 'a.sc'],
                  # ...
    }
}


# Lookup Type 4: Ligature Substitution

# Format 1:

{
    'format': 1,
    'ligatures': {
        ('input_glyph1','input_glyph2', ...): 'output_glyph',
        # ...
    }
}


# Lookup Type 5:

# Format 1: Simple Glyph Contexts

{
    'format': 1,
    'rules': [
        {'input': ['glyph02673', 'uni0941'], 'lookup_indices': [96, 98]},
        ...
    ]
}

# Format 2: Class-based Glyph Contexts

{
    'format': 2,
    'classes': {
        'class1': ['glyph02921'],
        'class2': ['glyph02897', 'glyph02899'],
        'class3': ['uni0930', 'uni0931', 'glyph02673', 'glyph02709'],
        ...
    },
    'rules': [
        {'input': ['class1', 'class2', 'class3'], 'lookup_indices': [74]},
        ...
    ]
}

# Format 3: TODO Coverage-based Glyph Contexts



# Lookup Type 6: Chaining Contextual Substitution

# Format 1: Simple Glyph Contexts

{
    'format': 1,
    'rules': [
        {'backtrack': [],
         'input': ['viramadeva_radeva', 'zerowidthjoiner'],
         'lookahead': ['hadeva'],
         'lookup_indices': [31, 31]},
         ...
     ]
}


# Format 2: Class-based Glyph Contexts

{
    'format': 2,
    'backtrack_classes': {
        'backtrack1': ['uni0000']
    },
    'input_classes': {
        'input1': ['glyph02673']
    },
    'lookahead_classes': {
        'lookahead1': [
            'uni0943',
            'uni0944',
            'uni094D',
            'uni0962',
            'uni0963']
    },
    'rules': [{'backtrack': [],
    'input': ['input1'],
    'lookahead': ['lookahead1'],
    'lookup_indices': [18]}]}


# Format 3: Coverage-based Glyph Contexts

{
    'backtrack': [],
    'input': [
        ('isign_ra_virama_anusvara.alt2',
         'isign_ra_virama.alt2',
         'isigndeva.alt2',
         'isigndeva_anusvara.alt2')
     ],
    'lookahead': [('vadeva_viramadeva',), ('hadeva',)],
    'lookup_indices': [34]
}

lohitdevanagari_gsub.txt

{ 'scripts': [{'DefaultLangSys': {'FeatureIndices': [6], 'ReqFeatureIndex': 65535}, 'LangSysRecords': [], 'tag': 'DFLT'},
             {'DefaultLangSys': {'FeatureIndices': [0, 1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 13], 'ReqFeatureIndex': 65535},
              'LangSysRecords': [{'FeatureIndices': [0, 1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13],
                                  'RequiredFeatureIndex': 65535,
                                  'tag': 'MAR '},
                                 {'FeatureIndices': [0, 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13],
                                  'RequiredFeatureIndex': 65535,
                                  'tag': 'NEP '}],
              'tag': 'dev2'},
             {'DefaultLangSys': {'FeatureIndices': [0, 1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 13], 'ReqFeatureIndex': 65535},
              'LangSysRecords': [{'FeatureIndices': [0, 1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13],
                                  'RequiredFeatureIndex': 65535,
                                  'tag': 'MAR '},
                                 {'FeatureIndices': [0, 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13],
                                  'RequiredFeatureIndex': 65535,
                                  'tag': 'NEP '}],
              'tag': 'deva'}],
 'features': [{'FeatureParams': None, 'lookup_indices': [25], 'tag': 'abvs'},
              {'FeatureParams': None, 'lookup_indices': [6], 'tag': 'akhn'},
              {'FeatureParams': None, 'lookup_indices': [8], 'tag': 'blwf'},
              {'FeatureParams': None, 'lookup_indices': [27], 'tag': 'blws'},
              {'FeatureParams': None, 'lookup_indices': [11], 'tag': 'cjct'},
              {'FeatureParams': None, 'lookup_indices': [9], 'tag': 'half'},
              {'FeatureParams': None, 'lookup_indices': [0], 'tag': 'haln'},
              {'FeatureParams': None, 'lookup_indices': [1, 2], 'tag': 'locl'},
              {'FeatureParams': None, 'lookup_indices': [3, 4], 'tag': 'locl'},
              {'FeatureParams': None, 'lookup_indices': [5], 'tag': 'nukt'},
              {'FeatureParams': None, 'lookup_indices': [12, 13, 16, 18, 20, 22, 24], 'tag': 'pres'},
              {'FeatureParams': None, 'lookup_indices': [26, 28, 30, 32, 33], 'tag': 'psts'},
              {'FeatureParams': None, 'lookup_indices': [7], 'tag': 'rphf'},
              {'FeatureParams': None, 'lookup_indices': [10], 'tag': 'vatu'}],
 'lookups': [{'flag': 0,
              'subtables': [{'format': 1, 'ligatures': {('dadeva', 'viramadeva'): 'dadeva_viramadeva'}}],
              'type': 4},
             {'flag': 0,
              'subtables': [{'format': 2, 'subs': {'ladeva': 'ladeva.mr', 'shadeva': 'shadeva.mr'}}],
              'type': 1},
             {'flag': 0,
              'subtables': [{'format': 1,
                             'ligatures': {('cadeva', 'viramadeva', 'cadeva'): 'cadeva_viramadeva_cadeva',
                                           ('cadeva', 'viramadeva', 'vadeva'): 'chadeva_viramadeva_vadeva',
                                           ('dadeva', 'viramadeva', 'badeva'): 'dadeva_viramadeva_badeva',
                                           ('dadeva', 'viramadeva', 'bhadeva'): 'dadeva_viramadeva_bhadeva',
                                           ('dadeva', 'viramadeva', 'dadeva'): 'dadeva_viramadeva_dadeva',
                                           ('dadeva', 'viramadeva', 'dhadeva'): 'dadeva_viramadeva_dhadeva',
                                           ('dadeva', 'viramadeva', 'gadeva'): 'dadeva_viramadeva_gadeva',
                                           ('dadeva', 'viramadeva', 'ghadeva'): 'dadeva_viramadeva_ghadeva',
                                           ('dadeva', 'viramadeva', 'madeva'): 'dadeva_viramadeva_madeva',
                                           ('dadeva', 'viramadeva', 'nadeva'): 'dadeva_viramadeva_nadeva',
                                           ('dadeva', 'viramadeva', 'vadeva'): 'dadeva_viramadeva_vadeva',
                                           ('dadeva', 'viramadeva', 'yadeva'): 'dadeva_viramadeva_yadeva',
                                           ('ddadeva', 'viramadeva', 'ddadeva'): 'ddadeva_viramadeva_ddadeva',
                                           ('ddadeva', 'viramadeva', 'ddhadeva'): 'ddadeva_viramadeva_ddhadeva',
                                           ('ddadeva', 'viramadeva', 'yadeva'): 'ddadeva_viramadeva_yadeva',
                                           ('ddhadeva', 'viramadeva', 'ddhadeva'): 'ddhadeva_viramadeva_ddhadeva',
                                           ('ddhadeva', 'viramadeva', 'yadeva'): 'ddhadeva_viramadeva_yadeva',
                                           ('gadeva', 'viramadeva', 'nadeva'): 'gadeva_viramadeva_nadeva',
                                           ('hadeva', 'viramadeva', 'ladeva.mr'): 'hadeva_viramadeva_ladeva',
                                           ('hadeva', 'viramadeva', 'madeva'): 'hadeva_viramadeva_madeva',
                                           ('hadeva', 'viramadeva', 'nadeva'): 'hadeva_viramadeva_nadeva',
                                           ('hadeva', 'viramadeva', 'nnadeva'): 'hadeva_viramadeva_nnadeva',
                                           ('hadeva', 'viramadeva', 'radeva'): 'hadeva_viramadeva_radeva',
                                           ('hadeva', 'viramadeva', 'vadeva'): 'hadeva_viramadeva_vadeva',
                                           ('hadeva', 'viramadeva', 'yadeva'): 'hadeva_viramadeva_yadeva',
                                           ('jadeva', 'viramadeva', 'jadeva'): 'jadeva_viramadeva_jadeva',
                                           ('kadeva', 'viramadeva', 'kadeva'): 'kadeva_viramadeva_kadeva',
                                           ('kadeva', 'viramadeva', 'ladeva.mr'): 'kadeva_viramadeva_ladeva',
                                           ('kadeva', 'viramadeva', 'vadeva'): 'kadeva_viramadeva_vadeva',
                                           ('ladeva.mr', 'viramadeva', 'ladeva.mr'): 'ladeva_viramadeva_ladeva',
                                           ('nadeva', 'viramadeva', 'nadeva'): 'nadeva_viramadeva_nadeva',
                                           ('ngadeva', 'viramadeva', 'gadeva'): 'ngadeva_viramadeva_gadeva',
                                           ('ngadeva', 'viramadeva', 'ghadeva'): 'ngadeva_viramadeva_ghadeva',
                                           ('ngadeva', 'viramadeva', 'kadeva'): 'ngadeva_viramadeva_kadeva',
                                           ('ngadeva', 'viramadeva', 'kadeva', 'viramadeva', 'ssadeva'): 'nga_virama_ka_virama_ssadeva',
                                           ('ngadeva', 'viramadeva', 'khadeva'): 'ngadeva_viramadeva_khadeva',
                                           ('ngadeva', 'viramadeva', 'madeva'): 'ngadeva_viramadeva_madeva',
                                           ('nyadeva', 'viramadeva', 'cadeva'): 'nyadeva_viramadeva_cadeva',
                                           ('nyadeva', 'viramadeva', 'jadeva'): 'nyadeva_viramadeva_jadeva',
                                           ('padeva', 'viramadeva', 'ladeva.mr'): 'padeva_viramadeva_ladeva',
                                           ('padeva', 'viramadeva', 'tadeva'): 'padeva_viramadeva_tadeva',
                                           ('phadeva', 'viramadeva', 'ladeva.mr'): 'phadeva_viramadeva_ladeva',
                                           ('shadeva.mr', 'viramadeva', 'cadeva'): 'shadeva_viramadeva_cadeva',
                                           ('shadeva.mr', 'viramadeva', 'ladeva.mr'): 'shadeva_viramadeva_ladeva',
                                           ('shadeva.mr', 'viramadeva', 'nadeva'): 'shadeva_viramadeva_nadeva',
                                           ('shadeva.mr', 'viramadeva', 'vadeva'): 'shadeva_viramadeva_vadeva',
                                           ('ttadeva', 'viramadeva', 'ttadeva'): 'ttadeva_viramadeva_ttadeva',
                                           ('ttadeva', 'viramadeva', 'tthadeva'): 'ttadeva_viramadeva_tthadeva',
                                           ('ttadeva', 'viramadeva', 'vadeva'): 'ttadeva_viramadeva_vadeva',
                                           ('ttadeva', 'viramadeva', 'yadeva'): 'ttadeva_viramadeva_yadeva',
                                           ('tthadeva', 'viramadeva', 'tthadeva'): 'tthadeva_viraamdeva_tthadeva',
                                           ('tthadeva', 'viramadeva', 'yadeva'): 'tthadeva_viraamdeva_yadeva'}}],
              'type': 4},
             {'flag': 0,
              'subtables': [{'format': 2,
                             'subs': {'eightdeva': 'eightdeva.np',
                                      'fivedeva': 'fivedeva.np',
                                      'jhadeva': 'jhadeva.np'}}],
              'type': 1},
             {'flag': 0,
              'subtables': [{'format': 1,
                             'ligatures': {('kadeva', 'viramadeva', 'radeva'): 'kadeva_viramadeva_radeva.np'}}],
              'type': 4},
             {'flag': 0,
              'subtables': [{'format': 1,
                             'ligatures': {('ddadeva', 'nuktadeva'): 'dddhadeva',
                                           ('ddhadeva', 'nuktadeva'): 'rhadeva',
                                           ('gadeva', 'nuktadeva'): 'ghhadeva',
                                           ('jadeva', 'nuktadeva'): 'zadeva',
                                           ('kadeva', 'nuktadeva'): 'qadeva',
                                           ('khadeva', 'nuktadeva'): 'khhadeva',
                                           ('lladeva', 'nuktadeva'): 'llladeva',
                                           ('nadeva', 'nuktadeva'): 'nnnadeva',
                                           ('phadeva', 'nuktadeva'): 'fadeva',
                                           ('radeva', 'nuktadeva'): 'rradeva',
                                           ('yadeva', 'nuktadeva'): 'yyadeva'}}],
              'type': 4},
             {'flag': 0,
              'subtables': [{'format': 1,
                             'ligatures': {('jadeva', 'viramadeva', 'nyadeva'): 'jadeva_viramadeva_nyadeva',
                                           ('kadeva', 'viramadeva', 'ssadeva'): 'kadeva_viramadeva_ssadeva'}}],
              'type': 4},
             {'flag': 0,
              'subtables': [{'format': 1, 'ligatures': {('radeva', 'viramadeva'): 'radeva_viramadeva'}}],
              'type': 4},
             {'flag': 0,
              'subtables': [{'format': 1,
                             'ligatures': {('hadeva', 'viramadeva_radeva'): 'hadeva_viramadeva_radeva',
                                           ('radeva', 'viramadeva'): 'viramadeva_radeva',
                                           ('viramadeva', 'radeva'): 'viramadeva_radeva'}}],
              'type': 4},
             {'flag': 0,
              'subtables': [{'format': 1,
                             'ligatures': {('badeva', 'viramadeva'): 'badeva_viramadeva',
                                           ('badeva_viramadeva_radeva', 'viramadeva'): 'ba_virama_ra_viramadeva',
                                           ('bhadeva', 'viramadeva'): 'bhadeva_viramadeva',
                                           ('cadeva', 'viramadeva'): 'cadeva_viramadeva',
                                           ('chadeva', 'viramadeva'): 'chadeva_viramadeva',
                                           ('dadeva', 'viramadeva'): 'dadeva_viramadeva',
                                           ('ddadeva', 'viramadeva'): 'ddadeva_viramadeva',
                                           ('ddhadeva', 'viramadeva'): 'ddhadeva_viramadeva',
                                           ('dhadeva', 'viramadeva'): 'dhadeva_viramadeva',
                                           ('fadeva', 'viramadeva'): 'fadeva_viramadeva',
                                           ('gadeva', 'viramadeva'): 'gadeva_viramadeva',
                                           ('ghadeva', 'viramadeva'): 'ghadeva_viramadeva',
                                           ('ghhadeva', 'viramadeva'): 'ghhadeva_viramadeva',
                                           ('hadeva', 'viramadeva'): 'hadeva_viramadeva',
                                           ('jadeva', 'viramadeva'): 'jadeva_viramadeva',
                                           ('jadeva_viramadeva_nyadeva', 'viramadeva'): 'ja_virama_nya_viramadeva',
                                           ('jhadeva', 'viramadeva'): 'jhadeva_viramadeva',
                                           ('kadeva', 'viramadeva'): 'kadeva_viramadeva',
                                           ('kadeva_viramadeva_ssadeva', 'viramadeva'): 'ka_virama_ssa_viramadeva',
                                           ('khadeva', 'viramadeva'): 'khadeva_viramadeva',
                                           ('khhadeva', 'viramadeva'): 'khhadeva_viramadeva',
                                           ('ladeva', 'viramadeva'): 'ladeva_viramadeva',
                                           ('ladeva.mr', 'viramadeva'): 'ladeva_viramadeva',
                                           ('lladeva', 'viramadeva'): 'lladeva_viramadeva',
                                           ('llladeva', 'viramadeva'): 'llladeva_viramadeva',
                                           ('madeva', 'viramadeva'): 'madeva_viramadeva',
                                           ('nadeva', 'viramadeva'): 'nadeva_viramadeva',
                                           ('ngadeva', 'viramadeva'): 'ngadeva_viramadeva',
                                           ('nnadeva', 'viramadeva'): 'nnadeva_viramadeva',
                                           ('nnnadeva', 'viramadeva'): 'nnnadeva_viramadeva',
                                           ('nyadeva', 'viramadeva'): 'nyadeva_viramadeva',
                                           ('padeva', 'viramadeva'): 'padeva_viramadeva',
                                           ('phadeva', 'viramadeva'): 'phadeva_viramadeva',
                                           ('qadeva', 'viramadeva'): 'qadeva_viramadeva',
                                           ('radeva', 'viramadeva', 'zerowidthjoiner'): 'radeva_viramadeva.alt',
                                           ('sadeva', 'viramadeva'): 'sadeva_viramadeva',
                                           ('shadeva', 'viramadeva'): 'shadeva_viramadeva',
                                           ('shadeva.mr', 'viramadeva'): 'shadeva_viramadeva.mr',
                                           ('ssadeva', 'viramadeva'): 'ssadeva_viramadeva',
                                           ('tadeva', 'viramadeva'): 'tadeva_viramadeva',
                                           ('tadeva_viramadeva_radeva', 'viramadeva'): 'ta_virama_ra_viramadeva',
                                           ('thadeva', 'viramadeva'): 'thadeva_viramadeva',
                                           ('ttadeva', 'viramadeva'): 'ttadeva_viramadeva',
                                           ('tthadeva', 'viramadeva'): 'tthadeva_viramadeva',
                                           ('vadeva', 'viramadeva'): 'vadeva_viramadeva',
                                           ('yadeva', 'viramadeva'): 'yadeva_viramadeva',
                                           ('zadeva', 'viramadeva'): 'zadeva_viramadeva'}}],
              'type': 4},
             {'flag': 0,
              'subtables': [{'format': 1,
                             'ligatures': {('badeva', 'viramadeva_radeva'): 'badeva_viramadeva_radeva',
                                           ('badeva', 'viramadeva_radeva', 'viramadeva'): 'ba_virama_ra_viramadeva',
                                           ('badeva_viramadeva', 'viramadeva_radeva'): 'ba_virama_ra_viramadeva',
                                           ('bhadeva', 'viramadeva_radeva'): 'bhadeva_viramadeva_radeva',
                                           ('cadeva', 'viramadeva_radeva'): 'cadeva_viramadeva_radeva',
                                           ('dadeva', 'viramadeva_radeva'): 'dadeva_viramadeva_radeva',
                                           ('dhadeva', 'viramadeva_radeva'): 'dhadeva_viramadeva_radeva',
                                           ('gadeva', 'viramadeva_radeva'): 'gadeva_viramadeva_radeva',
                                           ('ghadeva', 'viramadeva_radeva'): 'ghadeva_viramadeva_radeva',
                                           ('hadeva', 'viramadeva_radeva'): 'hadeva_viramadeva_radeva',
                                           ('jadeva', 'viramadeva_radeva'): 'jadeva_viramadeva_radeva',
                                           ('jadeva_viramadeva_nyadeva', 'viramadeva_radeva'): 'ja_virama_nya_virama_radeva',
                                           ('jhadeva', 'viramadeva_radeva'): 'jhadeva_viramadeva_radeva',
                                           ('kadeva', 'viramadeva_radeva'): 'kadeva_viramadeva_radeva',
                                           ('kadeva_viramadeva_ssadeva', 'viramadeva_radeva'): 'ka_virama_ssa_virama_radeva',
                                           ('khadeva', 'viramadeva_radeva'): 'khadeva_viramadeva_radeva',
                                           ('ladeva', 'viramadeva_radeva'): 'ladeva_viramadeva_radeva',
                                           ('ladeva.mr', 'viramadeva_radeva'): 'ladeva_viramadeva_radeva',
                                           ('madeva', 'viramadeva_radeva'): 'madeva_viramadeva_radeva',
                                           ('nadeva', 'viramadeva_radeva'): 'nadeva_viramadeva_radeva',
                                           ('nnadeva', 'viramadeva_radeva'): 'nnadeva_viramadeva_radeva',
                                           ('nyadeva', 'viramadeva_radeva'): 'nyadeva_viramadeva_radeva',
                                           ('padeva', 'viramadeva_radeva'): 'padeva_viramadeva_radeva',
                                           ('phadeva', 'viramadeva_radeva'): 'phadeva_viramadeva_radeva',
                                           ('sadeva', 'viramadeva_radeva'): 'sadeva_viramadeva_radeva',
                                           ('shadeva', 'viramadeva_radeva'): 'shadeva_viramadeva_radeva',
                                           ('shadeva.mr', 'viramadeva_radeva'): 'shadeva_viramadeva_radeva',
                                           ('shadeva_viramadeva.alt', 'radeva'): 'shadeva_viramadeva_radeva',
                                           ('ssadeva', 'viramadeva_radeva'): 'ssadeva_viramadeva_radeva',
                                           ('tadeva', 'viramadeva_radeva'): 'tadeva_viramadeva_radeva',
                                           ('tadeva', 'viramadeva_radeva', 'viramadeva'): 'ta_virama_ra_viramadeva',
                                           ('tadeva_viramadeva', 'viramadeva_radeva'): 'ta_virama_ra_viramadeva',
                                           ('thadeva', 'viramadeva_radeva'): 'thadeva_viramadeva_radeva',
                                           ('vadeva', 'viramadeva_radeva'): 'vadeva_viramadeva_radeva',
                                           ('yadeva', 'viramadeva_radeva'): 'yadeva_viramadeva_radeva'}}],
              'type': 4},
             {'flag': 0,
              'subtables': [{'format': 1,
                             'ligatures': {('dadeva', 'viramadeva', 'badeva'): 'dadeva_viramadeva_badeva',
                                           ('dadeva', 'viramadeva', 'bhadeva'): 'dadeva_viramadeva_bhadeva',
                                           ('dadeva', 'viramadeva', 'dadeva'): 'dadeva_viramadeva_dadeva',
                                           ('dadeva', 'viramadeva', 'dhadeva'): 'dadeva_viramadeva_dhadeva',
                                           ('dadeva', 'viramadeva', 'gadeva'): 'dadeva_viramadeva_gadeva',
                                           ('dadeva', 'viramadeva', 'ghadeva'): 'dadeva_viramadeva_ghadeva',
                                           ('dadeva', 'viramadeva', 'madeva'): 'dadeva_viramadeva_madeva',
                                           ('dadeva', 'viramadeva', 'nadeva'): 'dadeva_viramadeva_nadeva',
                                           ('dadeva', 'viramadeva', 'vadeva'): 'dadeva_viramadeva_vadeva',
                                           ('dadeva', 'viramadeva', 'yadeva'): 'dadeva_viramadeva_yadeva',
                                           ('dadeva_viramadeva', 'dhadeva_viramadeva_radeva', 'viramadeva', 'yadeva'): 'da_ddha_ra_yadeva',
                                           ('dadeva_viramadeva_dhadeva', 'viramadeva_radeva', 'viramadeva', 'yadeva'): 'da_ddha_ra_yadeva'}}],
              'type': 4},
             {'flag': 0,
              'subtables': [{'format': 1,
                             'ligatures': {('cadeva_viramadeva', 'cadeva'): 'cadeva_viramadeva_cadeva',
                                           ('chadeva_viramadeva', 'vadeva'): 'chadeva_viramadeva_vadeva',
                                           ('dadeva_viramadeva', 'badeva'): 'dadeva_viramadeva_badeva',
                                           ('dadeva_viramadeva', 'bhadeva'): 'dadeva_viramadeva_bhadeva',
                                           ('dadeva_viramadeva', 'dadeva'): 'dadeva_viramadeva_dadeva',
                                           ('dadeva_viramadeva', 'dhadeva'): 'dadeva_viramadeva_dhadeva',
                                           ('dadeva_viramadeva', 'gadeva'): 'dadeva_viramadeva_gadeva',
                                           ('dadeva_viramadeva', 'ghadeva'): 'dadeva_viramadeva_ghadeva',
                                           ('dadeva_viramadeva', 'madeva'): 'dadeva_viramadeva_madeva',
                                           ('dadeva_viramadeva', 'nadeva'): 'dadeva_viramadeva_nadeva',
                                           ('dadeva_viramadeva', 'vadeva'): 'dadeva_viramadeva_vadeva',
                                           ('dadeva_viramadeva', 'yadeva'): 'dadeva_viramadeva_yadeva',
                                           ('ddadeva_viramadeva', 'ddadeva'): 'ddadeva_viramadeva_ddadeva',
                                           ('ddadeva_viramadeva', 'ddhadeva'): 'ddadeva_viramadeva_ddhadeva',
                                           ('ddadeva_viramadeva', 'yadeva'): 'ddadeva_viramadeva_yadeva',
                                           ('ddhadeva_viramadeva', 'ddhadeva'): 'ddhadeva_viramadeva_ddhadeva',
                                           ('ddhadeva_viramadeva', 'yadeva'): 'ddhadeva_viramadeva_yadeva',
                                           ('gadeva_viramadeva', 'nadeva'): 'gadeva_viramadeva_nadeva',
                                           ('hadeva_viramadeva', 'ladeva'): 'hadeva_viramadeva_ladeva',
                                           ('hadeva_viramadeva', 'madeva'): 'hadeva_viramadeva_madeva',
                                           ('hadeva_viramadeva', 'nadeva'): 'hadeva_viramadeva_nadeva',
                                           ('hadeva_viramadeva', 'nnadeva'): 'hadeva_viramadeva_nnadeva',
                                           ('hadeva_viramadeva', 'vadeva'): 'hadeva_viramadeva_vadeva',
                                           ('hadeva_viramadeva', 'yadeva'): 'hadeva_viramadeva_yadeva',
                                           ('jadeva_viramadeva', 'jadeva'): 'jadeva_viramadeva_jadeva',
                                           ('jadeva_viramadeva', 'jadeva_viramadeva'): 'ja_virama_ja_viramadeva',
                                           ('kadeva_viramadeva', 'kadeva'): 'kadeva_viramadeva_kadeva',
                                           ('kadeva_viramadeva', 'ladeva'): 'kadeva_viramadeva_ladeva',
                                           ('kadeva_viramadeva', 'tadeva'): 'kadeva_viramadeva_tadeva',
                                           ('kadeva_viramadeva', 'vadeva'): 'kadeva_viramadeva_vadeva',
                                           ('ladeva_viramadeva', 'ladeva'): 'ladeva_viramadeva_ladeva',
                                           ('nadeva_viramadeva', 'nadeva'): 'nadeva_viramadeva_nadeva',
                                           ('ngadeva_viramadeva', 'gadeva'): 'ngadeva_viramadeva_gadeva',
                                           ('ngadeva_viramadeva', 'ghadeva'): 'ngadeva_viramadeva_ghadeva',
                                           ('ngadeva_viramadeva', 'kadeva'): 'ngadeva_viramadeva_kadeva',
                                           ('ngadeva_viramadeva', 'kadeva_viramadeva_ssadeva'): 'nga_virama_ka_virama_ssadeva',
                                           ('ngadeva_viramadeva', 'khadeva'): 'ngadeva_viramadeva_khadeva',
                                           ('ngadeva_viramadeva', 'madeva'): 'ngadeva_viramadeva_madeva',
                                           ('nyadeva_viramadeva', 'cadeva'): 'nyadeva_viramadeva_cadeva',
                                           ('nyadeva_viramadeva', 'jadeva'): 'nyadeva_viramadeva_jadeva',
                                           ('padeva_viramadeva', 'ladeva'): 'padeva_viramadeva_ladeva',
                                           ('padeva_viramadeva', 'tadeva'): 'padeva_viramadeva_tadeva',
                                           ('phadeva_viramadeva', 'ladeva'): 'phadeva_viramadeva_ladeva',
                                           ('sadeva_viramadeva', 'tadeva_viramadeva_radeva'): 'sa_virama_ta_virama_radeva',
                                           ('shadeva', 'rvocalicsigndeva'): 'sha_virama_rvocalicdeva',
                                           ('shadeva', 'viramadeva', 'radeva'): 'shadeva_viramadeva_radeva',
                                           ('shadeva.mr', 'rvocalicsigndeva'): 'sha_virama_rvocalicdeva',
                                           ('shadeva_viramadeva', 'cadeva'): 'shadeva_viramadeva_cadeva',
                                           ('shadeva_viramadeva', 'ladeva'): 'shadeva_viramadeva_ladeva',
                                           ('shadeva_viramadeva', 'nadeva'): 'shadeva_viramadeva_nadeva',
                                           ('shadeva_viramadeva', 'vadeva'): 'shadeva_viramadeva_vadeva',
                                           ('shadeva_viramadeva.mr', 'radeva'): 'shadeva_viramadeva_radeva',
                                           ('ssadeva_viramadeva', 'ttadeva'): 'ssadeva_viramadeva_ttadeva',
                                           ('ssadeva_viramadeva', 'tthadeva'): 'ssadeva_viramadeva_tthadeva',
                                           ('tadeva_viramadeva', 'tadeva'): 'tadeva_viramadeva_tadeva',
                                           ('tadeva_viramadeva', 'tadeva_viramadeva'): 'ta_virama_ta_viramadeva',
                                           ('ttadeva_viramadeva', 'ttadeva'): 'ttadeva_viramadeva_ttadeva',
                                           ('ttadeva_viramadeva', 'tthadeva'): 'ttadeva_viramadeva_tthadeva',
                                           ('ttadeva_viramadeva', 'vadeva'): 'ttadeva_viramadeva_vadeva',
                                           ('ttadeva_viramadeva', 'yadeva'): 'ttadeva_viramadeva_yadeva',
                                           ('tthadeva_viramadeva', 'tthadeva'): 'tthadeva_viraamdeva_tthadeva',
                                           ('tthadeva_viramadeva', 'yadeva'): 'tthadeva_viraamdeva_yadeva'}}],
              'type': 4},
             {'flag': 0,
              'subtables': [{'backtrack': [],
                             'format': 3,
                             'input': [('isigndeva',)],
                             'lookahead': [('khadeva',
                                            'ladeva',
                                            'khhadeva',
                                            'tadeva_viramadeva_tadeva',
                                            'gadeva_viramadeva',
                                            'ghhadeva_viramadeva',
                                            'khadeva_viramadeva_radeva',
                                            'sadeva_viramadeva_radeva',
                                            'jadeva_viramadeva_jadeva',
                                            'hadeva_viramadeva_yadeva',
                                            'sa_virama_ta_virama_radeva',
                                            'ladeva_viramadeva_radeva')],
                             'lookup_indices': [14]},
                            {'backtrack': [],
                             'format': 3,
                             'input': [('isigndeva',)],
                             'lookahead': [('radeva', 'rradeva')],
                             'lookup_indices': [15]}],
              'type': 6},
             {'flag': 0, 'subtables': [{'format': 1, 'subs': {'isigndeva': 'isigndeva.alt1'}}], 'type': 1},
             {'flag': 0, 'subtables': [{'format': 1, 'subs': {'isigndeva': 'isigndeva.alt3'}}], 'type': 1},
             {'flag': 0,
              'subtables': [{'backtrack': [],
                             'format': 3,
                             'input': [('isigndeva',)],
                             'lookahead': [('kadeva_viramadeva',
                                            'khadeva_viramadeva',
                                            'ghadeva_viramadeva',
                                            'ngadeva_viramadeva',
                                            'cadeva_viramadeva',
                                            'chadeva_viramadeva',
                                            'jadeva_viramadeva',
                                            'jhadeva_viramadeva',
                                            'nyadeva_viramadeva',
                                            'ttadeva_viramadeva',
                                            'tthadeva_viramadeva',
                                            'ddadeva_viramadeva',
                                            'ddhadeva_viramadeva',
                                            'nnadeva_viramadeva',
                                            'tadeva_viramadeva',
                                            'thadeva_viramadeva',
                                            'dadeva_viramadeva',
                                            'dhadeva_viramadeva',
                                            'nadeva_viramadeva',
                                            'nnnadeva_viramadeva',
                                            'padeva_viramadeva',
                                            'phadeva_viramadeva',
                                            'badeva_viramadeva',
                                            'bhadeva_viramadeva',
                                            'madeva_viramadeva',
                                            'yadeva_viramadeva',
                                            'ladeva_viramadeva',
                                            'lladeva_viramadeva',
                                            'llladeva_viramadeva',
                                            'vadeva_viramadeva',
                                            'shadeva_viramadeva',
                                            'ssadeva_viramadeva',
                                            'sadeva_viramadeva',
                                            'qadeva_viramadeva',
                                            'khhadeva_viramadeva',
                                            'zadeva_viramadeva',
                                            'fadeva_viramadeva',
                                            'shadeva_viramadeva.alt',
                                            'ta_virama_ra_viramadeva',
                                            'ta_virama_ta_viramadeva',
                                            'ka_virama_ssa_viramadeva',
                                            'ja_virama_nya_viramadeva',
                                            'yadeva_alt',
                                            'ttadeva_viramadeva_yadeva',
                                            'tthadeva_viraamdeva_yadeva',
                                            'ddadeva_viramadeva_yadeva',
                                            'ddhadeva_viramadeva_yadeva',
                                            'da_ddha_ra_yadeva',
                                            'shadeva_viramadeva.mr')],
                             'lookup_indices': [17]}],
              'type': 6},
             {'flag': 0, 'subtables': [{'format': 1, 'subs': {'isigndeva': 'isigndeva.alt2'}}], 'type': 1},
             {'flag': 0,
              'subtables': [{'backtrack': [],
                             'format': 3,
                             'input': [('isigndeva',)],
                             'lookahead': [('ghadeva',
                                            'ngadeva',
                                            'cadeva',
                                            'ddadeva',
                                            'tadeva',
                                            'dhadeva',
                                            'yadeva',
                                            'kadeva_viramadeva_ssadeva',
                                            'ngadeva_viramadeva_kadeva',
                                            'ngadeva_viramadeva_khadeva',
                                            'ngadeva_viramadeva_gadeva',
                                            'ngadeva_viramadeva_ghadeva',
                                            'ngadeva_viramadeva_madeva',
                                            'nga_virama_ka_virama_ssadeva',
                                            'cadeva_viramadeva_cadeva',
                                            'chadeva_viramadeva_vadeva',
                                            'ddadeva_viramadeva_ddadeva',
                                            'ddadeva_viramadeva_ddhadeva',
                                            'dadeva_viramadeva_ghadeva',
                                            'dadeva_viramadeva_dhadeva',
                                            'nadeva_viramadeva_nadeva',
                                            'shadeva_viramadeva_cadeva',
                                            'shadeva_viramadeva_nadeva',
                                            'shadeva_viramadeva_ladeva',
                                            'shadeva_viramadeva_vadeva',
                                            'ghadeva_viramadeva_radeva',
                                            'cadeva_viramadeva_radeva',
                                            'dhadeva_viramadeva_radeva',
                                            'nadeva_viramadeva_radeva',
                                            'ssadeva_viramadeva_radeva',
                                            'ka_virama_ssa_virama_radeva')],
                             'lookup_indices': [19]}],
              'type': 6},
             {'flag': 0, 'subtables': [{'format': 1, 'subs': {'isigndeva': 'isigndeva.alt4'}}], 'type': 1},
             {'flag': 0,
              'subtables': [{'backtrack': [],
                             'format': 3,
                             'input': [('isigndeva',)],
                             'lookahead': [('chadeva',
                                            'nnadeva',
                                            'thadeva',
                                            'bhadeva',
                                            'lladeva',
                                            'llladeva',
                                            'shadeva',
                                            'shadeva_viramadeva_radeva',
                                            'jadeva_viramadeva_nyadeva',
                                            'bhadeva_viramadeva_radeva',
                                            'thadeva_viramadeva_radeva',
                                            'ja_virama_nya_virama_radeva',
                                            'shadeva.mr')],
                             'lookup_indices': [21]}],
              'type': 6},
             {'flag': 0, 'subtables': [{'format': 1, 'subs': {'isigndeva': 'isigndeva.tha'}}], 'type': 1},
             {'flag': 0,
              'subtables': [{'backtrack': [],
                             'format': 3,
                             'input': [('isigndeva',)],
                             'lookahead': [('jadeva',
                                            'jhadeva',
                                            'nyadeva',
                                            'sadeva',
                                            'jadeva_viramadeva_radeva',
                                            'jhadeva_viramadeva_radeva',
                                            'nyadeva_viramadeva_cadeva',
                                            'nyadeva_viramadeva_jadeva',
                                            'dadeva_viramadeva_madeva',
                                            'dadeva_viramadeva_yadeva',
                                            'ladeva_viramadeva_ladeva',
                                            'hadeva_viramadeva_madeva',
                                            'ladeva.mr')],
                             'lookup_indices': [23]}],
              'type': 6},
             {'flag': 0, 'subtables': [{'format': 1, 'subs': {'isigndeva': 'isigndeva.ja'}}], 'type': 1},
             {'flag': 6,
              'subtables': [{'format': 1,
                             'ligatures': {('isigndeva', 'anusvaradeva'): 'isigndeva_anusvaradeva',
                                           ('isigndeva', 'radeva_viramadeva'): 'isign_ra_virama',
                                           ('isigndeva', 'radeva_viramadeva', 'anusvaradeva'): 'isign_ra_virama_anusvara',
                                           ('isigndeva.alt1', 'anusvaradeva'): 'isigndeva_anusvara.alt1',
                                           ('isigndeva.alt1', 'radeva_viramadeva'): 'isign_ra_virama.alt1',
                                           ('isigndeva.alt1', 'radeva_viramadeva', 'anusvaradeva'): 'isign_ra_virama_anusvara.alt1',
                                           ('isigndeva.alt2', 'anusvaradeva'): 'isigndeva_anusvara.alt2',
                                           ('isigndeva.alt2', 'radeva_viramadeva'): 'isign_ra_virama.alt2',
                                           ('isigndeva.alt2', 'radeva_viramadeva', 'anusvaradeva'): 'isign_ra_virama_anusvara.alt2',
                                           ('isigndeva.alt3', 'anusvaradeva'): 'isigndeva_anusvaradeva.alt3',
                                           ('isigndeva.alt3', 'radeva_viramadeva'): 'isign_ra_virama.alt3',
                                           ('isigndeva.alt3', 'radeva_viramadeva', 'anusvaradeva'): 'isign_ra_virama_anusvara.alt3',
                                           ('isigndeva.alt4', 'anusvaradeva'): 'isigndeva_anusvaradeva.alt4',
                                           ('isigndeva.alt4', 'radeva_viramadeva'): 'isign_ra_virama.alt4',
                                           ('isigndeva.alt4', 'radeva_viramadeva', 'anusvaradeva'): 'isign_ra_virama_anusvara.alt4',
                                           ('isigndeva.ja', 'anusvaradeva'): 'isigndeva_anusvaradeva.ja',
                                           ('isigndeva.tha', 'anusvaradeva'): 'isigndeva_anusvara.tha',
                                           ('isigndeva.tha', 'radeva_viramadeva'): 'isign_ra_virama.ja',
                                           ('isigndeva.tha', 'radeva_viramadeva', 'anusvaradeva'): 'isign_ra_virama_anusvara.tha'}}],
              'type': 4},
             {'flag': 0,
              'subtables': [{'format': 1,
                             'ligatures': {('aisigndeva', 'anusvaradeva'): 'aisigndeva_anusvaradeva',
                                           ('aisigndeva', 'radeva_viramadeva'): 'aisign_ra_virama.alt1',
                                           ('aisigndeva', 'radeva_viramadeva', 'anusvaradeva'): 'aisign_ra_virama_anusvara',
                                           ('ausigndeva', 'anusvaradeva'): 'ausigndeva_anusvaradeva',
                                           ('ausigndeva', 'radeva_viramadeva'): 'ausign_ra_virama.alt1',
                                           ('ausigndeva', 'radeva_viramadeva', 'anusvaradeva'): 'ausign_ra_virama_anusvara',
                                           ('esigndeva', 'anusvaradeva'): 'esigndeva_anusvaradeva',
                                           ('esigndeva', 'radeva_viramadeva'): 'esign_ra_virama.alt1',
                                           ('esigndeva', 'radeva_viramadeva', 'anusvaradeva'): 'esign_ra_virama_anusvara',
                                           ('osigndeva', 'anusvaradeva'): 'osigndeva_anusvaradeva',
                                           ('osigndeva', 'radeva_viramadeva'): 'osign_ra_virama.alt1',
                                           ('osigndeva', 'radeva_viramadeva', 'anusvaradeva'): 'osign_ra_virama_anusvara',
                                           ('radeva_viramadeva', 'anusvaradeva'): 'radeva_viramadeva_anusvaradeva'}}],
              'type': 4},
             {'flag': 0,
              'subtables': [{'format': 1,
                             'ligatures': {('iisigndeva', 'anusvaradeva'): 'iisigndeva_anusvaradeva',
                                           ('iisigndeva', 'radeva_viramadeva'): 'iisigndeva_ra_virama',
                                           ('iisigndeva', 'radeva_viramadeva_anusvaradeva'): 'iisign_ra_virama_anusvara',
                                           ('iisigndeva.alt1', 'anusvaradeva'): 'iisigndeva_anusvaradeva.alt1',
                                           ('iisigndeva.alt1', 'radeva_viramadeva'): 'iisigndeva_ra_virama.alt1',
                                           ('iisigndeva.alt1', 'radeva_viramadeva_anusvaradeva'): 'iisign_ra_virama_anusvara.alt1',
                                           ('isigndeva', 'anusvaradeva'): 'isigndeva_anusvaradeva',
                                           ('isigndeva', 'radeva_viramadeva'): 'isign_ra_virama',
                                           ('isigndeva', 'radeva_viramadeva_anusvaradeva'): 'isign_ra_virama_anusvara'}}],
              'type': 4},
             {'flag': 0,
              'subtables': [{'format': 1,
                             'ligatures': {('dadeva', 'rvocalicsigndeva'): 'dadeva_rvocalicsigndeva',
                                           ('hadeva', 'rvocalicsigndeva'): 'hadeva_rvocalicdeva',
                                           ('viramadeva_radeva', 'usigndeva'): 'vattudeva_ulowdeva',
                                           ('viramadeva_radeva', 'uusigndeva'): 'vattudeva_uulowdeva'}}],
              'type': 4},
             {'flag': 0,
              'subtables': [{'backtrack': [('rvocalicdeva',
                                            'kadeva',
                                            'phadeva',
                                            'qadeva',
                                            'fadeva',
                                            'rrvocalicdeva',
                                            'phadeva_radeva_nuktadeva',
                                            'phadeva_viramadeva_radeva',
                                            'kadeva_viramadeva_kadeva',
                                            'kadeva_viramadeva_tadeva',
                                            'kadeva_viramadeva_ladeva',
                                            'kadeva_viramadeva_vadeva',
                                            'phadeva_viramadeva_ladeva')],
                             'format': 3,
                             'input': [('iisigndeva',
                                        'iisigndeva_anusvaradeva',
                                        'iisigndeva_ra_virama',
                                        'iisign_ra_virama_anusvara')],
                             'lookahead': [],
                             'lookup_indices': [29]}],
              'type': 6},
             {'flag': 0,
              'subtables': [{'format': 2,
                             'subs': {'iisign_ra_virama_anusvara': 'iisign_ra_virama_anusvara.alt1',
                                      'iisigndeva': 'iisigndeva.alt1',
                                      'iisigndeva_anusvaradeva': 'iisign_ra_virama_anusvara.alt1',
                                      'iisigndeva_ra_virama': 'iisigndeva_ra_virama.alt1'}}],
              'type': 1},
             {'flag': 0,
              'subtables': [{'format': 1,
                             'ligatures': {('radeva', 'usigndeva'): 'radeva_usigndeva',
                                           ('radeva', 'uusigndeva'): 'radeva_uusigndeva'}}],
              'type': 4},
             {'flag': 0,
              'subtables': [{'format': 1,
                             'ligatures': {('rradeva', 'viramadeva'): 'radeva_viramadeva.alt',
                                           ('viramadeva_radeva', 'zerowidthjoiner'): 'radeva_viramadeva.alt'}}],
              'type': 4},
             {'flag': 0,
              'subtables': [{'format': 1,
                             'rules': [{'backtrack': [],
                                        'input': ['rradeva', 'viramadeva'],
                                        'lookahead': ['yadeva'],
                                        'lookup_indices': [31, 31]}]},
                            {'format': 1,
                             'rules': [{'backtrack': [],
                                        'input': ['rradeva', 'viramadeva'],
                                        'lookahead': ['hadeva'],
                                        'lookup_indices': [31, 31]}]},
                            {'format': 1,
                             'rules': [{'backtrack': [],
                                        'input': ['viramadeva_radeva', 'zerowidthjoiner'],
                                        'lookahead': ['yadeva'],
                                        'lookup_indices': [31, 31]}]},
                            {'format': 1,
                             'rules': [{'backtrack': [],
                                        'input': ['viramadeva_radeva', 'zerowidthjoiner'],
                                        'lookahead': ['hadeva'],
                                        'lookup_indices': [31, 31]}]}],
              'type': 6},
             {'flag': 0,
              'subtables': [{'backtrack': [],
                             'format': 3,
                             'input': [('isign_ra_virama_anusvara.alt2',
                                        'isign_ra_virama.alt2',
                                        'isigndeva.alt2',
                                        'isigndeva_anusvara.alt2')],
                             'lookahead': [('vadeva_viramadeva',), ('hadeva',)],
                             'lookup_indices': [34]}],
              'type': 6},
             {'flag': 0,
              'subtables': [{'format': 2,
                             'subs': {'isign_ra_virama.alt2': 'isign_ra_virama.alt1',
                                      'isign_ra_virama_anusvara.alt2': 'isign_ra_virama_anusvara.alt1',
                                      'isigndeva.alt2': 'isigndeva.alt1',
                                      'isigndeva_anusvara.alt2': 'isigndeva_anusvara.alt1'}}],
              'type': 1}],
 'version': 65536}