ootobai notta koto aru
ootobai notta koto aru ?
oː t o b a i WORD_BOUNDARY n o t t a WORD_BOUNDARY k o t o WORD_BOUNDARY a r ɯ WORD_BOUNDARY
o o t o b a i WORD_BOUNDARY n o t t a WORD_BOUNDARY k o t o WORD_BOUNDARY a r u WORD_BOUNDARY