kore wa nan yatta ka naa
kore wa nan yatta ka naa ?
k o r e WORD_BOUNDARY w a WORD_BOUNDARY n a n WORD_BOUNDARY j a t t a WORD_BOUNDARY k a WORD_BOUNDARY n aː WORD_BOUNDARY
k o r e WORD_BOUNDARY w a WORD_BOUNDARY n a n WORD_BOUNDARY y a t t a WORD_BOUNDARY k a WORD_BOUNDARY n a a WORD_BOUNDARY