dakuten.py

import sys

voicemap = str.maketrans({
    'g': u'k\u3099',
    'G': u'K\u3099',
    'z': u's\u3099',
    'Z': u'S\u3099',
    'd': u't\u3099',
    'D': u'T\u3099',
    'b': u'h\u3099',
    'B': u'H\u3099',
    'p': u'h\u309A',
    'P': u'H\u309A',
})

def main():
    s = sys.stdin.read()
    print(s.translate(voicemap))

if __name__ == '__main__':
    main()