bu: tte yuu no nani
bu: tte yuu no nani ?
b ɯ WORD_BOUNDARY t t e WORD_BOUNDARY j ɯː WORD_BOUNDARY n o WORD_BOUNDARY n a n i WORD_BOUNDARY
b u : WORD_BOUNDARY t t e WORD_BOUNDARY y u u WORD_BOUNDARY n o WORD_BOUNDARY n a n i WORD_BOUNDARY