aka na n da tte koko wa
aka na n da tte koko wa .
a k a WORD_BOUNDARY n a WORD_BOUNDARY n WORD_BOUNDARY d a WORD_BOUNDARY t t e WORD_BOUNDARY k o k o WORD_BOUNDARY w a WORD_BOUNDARY
a k a WORD_BOUNDARY n a WORD_BOUNDARY n WORD_BOUNDARY d a WORD_BOUNDARY t t e WORD_BOUNDARY k o k o WORD_BOUNDARY w a WORD_BOUNDARY