dooiu fuu ni natteru
dooiu fuu ni natteru ?
d oː i ɯ WORD_BOUNDARY ɸ ɯː WORD_BOUNDARY n i WORD_BOUNDARY n a t t e r ɯ WORD_BOUNDARY
d o o i u WORD_BOUNDARY f u u WORD_BOUNDARY n i WORD_BOUNDARY n a t t e r u WORD_BOUNDARY