shiranai nani katta ka
shiranai nani katta ka ?
ʃ i r a n a i WORD_BOUNDARY n a n i WORD_BOUNDARY k a t t a WORD_BOUNDARY k a WORD_BOUNDARY
s h i r a n a i WORD_BOUNDARY n a n i WORD_BOUNDARY k a t t a WORD_BOUNDARY k a WORD_BOUNDARY