bakku bakku de iku no
bakku bakku de iku no ?
b a k k ɯ WORD_BOUNDARY b a k k ɯ WORD_BOUNDARY d e WORD_BOUNDARY i k ɯ WORD_BOUNDARY n o WORD_BOUNDARY
b a k k u WORD_BOUNDARY b a k k u WORD_BOUNDARY d e WORD_BOUNDARY i k u WORD_BOUNDARY n o WORD_BOUNDARY