nande koo yuu koto ni natta ka shitteru
nande koo yuu koto ni natta ka shitteru ?
n a n d e WORD_BOUNDARY k oː WORD_BOUNDARY j ɯː WORD_BOUNDARY k o t o WORD_BOUNDARY n i WORD_BOUNDARY n a t t a WORD_BOUNDARY k a WORD_BOUNDARY ʃ i t t e r ɯ WORD_BOUNDARY
n a n d e WORD_BOUNDARY k o o WORD_BOUNDARY y u u WORD_BOUNDARY k o t o WORD_BOUNDARY n i WORD_BOUNDARY n a t t a WORD_BOUNDARY k a WORD_BOUNDARY s h i t t e r u WORD_BOUNDARY