bunbunbun tte iku no
bunbunbun tte iku no ?
b ɯ n b ɯ n b ɯ n WORD_BOUNDARY t t e WORD_BOUNDARY i k ɯ WORD_BOUNDARY n o WORD_BOUNDARY
b u n b u n b u n WORD_BOUNDARY t t e WORD_BOUNDARY i k u WORD_BOUNDARY n o WORD_BOUNDARY