aka wa aka tte narabeteta no
aka wa aka tte narabeteta no ?
a k a WORD_BOUNDARY w a WORD_BOUNDARY a k a WORD_BOUNDARY t t e WORD_BOUNDARY n a r a b e t e t a WORD_BOUNDARY n o WORD_BOUNDARY
a k a WORD_BOUNDARY w a WORD_BOUNDARY a k a WORD_BOUNDARY t t e WORD_BOUNDARY n a r a b e t e t a WORD_BOUNDARY n o WORD_BOUNDARY