tagged_reg_Expression

patrones = [
    (r"[Aa]m$", "BEM"),  # irregular forms of 'to be'
    (r"[Aa]re$", "BER"),  #
    (r"[Ii]s$", "BEZ"),  #
    (r"[Ww]as$", "BEDZ"),  #
    (r"[Ww]ere$", "BED"),  #
    (r"[Bb]een$", "BEN"),  #
    (r"[Hh]ave$", "HV"),  # irregular forms of 'to have'
    (r"[Hh]as$", "HVZ"),  #
    (r"[Hh]ad$", "HVD"),  #
    (r"I$", "PRP"),  # personal pronouns
    (r"[Yy]ou$", "PRP"),  #
    (r"[Hh]e$", "PRP"),  #
    (r"[Ss]he$", "PRP"),  #
    (r"[Ii]t$", "PRP"),  #
    (r"[Tt]hey$", "PRP"),  #
    (r"[Aa]n?$", "AT"),  #
    (r"[Tt]he$", "AT"),  #
    (r"[Ww]h.+$", "WP"),  # wh- pronoun
    (r".*ing$", "VBG"),  # gerunds
    (r".*ed$", "VBD"),  # simple past
    (r".*es$", "VBZ"),  # 3rd singular present
    (r"[Cc]an(not|n\'t)?$", "MD"),  # modals
    (r"[Mm]ight$", "MD"),  #
    (r"[Mm]ay$", "MD"),  #
    (r".+ould$", "MD"),  # modals: could, should, would
    (r".*ly$", "RB"),  # adverbs
    (r".*\'s$", "NN$"),  # possessive nouns
    (r".*s$", "NNS"),  # plural nouns
    (r"-?[0-9]+(.[0-9]+)?$", "CD"),  # cardinal numbers
    (r"^to$", "TO"),  # to
    (r"^in$", "IN"),  # in prep
    (r"^[A-Z]+([a-z])*$", "NNP"),  # proper nouns
    (r".*", "NN"),  # nouns (default)
]