nande hattaatta no ka naa
nande hattaatta no ka naa ?
n a n d e WORD_BOUNDARY h a t t aː t t a WORD_BOUNDARY n o WORD_BOUNDARY k a WORD_BOUNDARY n aː WORD_BOUNDARY
n a n d e WORD_BOUNDARY h a t t a a t t a WORD_BOUNDARY n o WORD_BOUNDARY k a WORD_BOUNDARY n a a WORD_BOUNDARY