nani shite hashitte kaetta no
nani shite hashitte kaetta no ?
n a n i WORD_BOUNDARY ʃ i t e WORD_BOUNDARY h a ʃ i t t e WORD_BOUNDARY k a e t t a WORD_BOUNDARY n o WORD_BOUNDARY
n a n i WORD_BOUNDARY s h i t e WORD_BOUNDARY h a s h i t t e WORD_BOUNDARY k a e t t a WORD_BOUNDARY n o WORD_BOUNDARY