buubuu kimashita buubuu
buubuu kimashita buubuu .
b ɯː b ɯː WORD_BOUNDARY k i m a ʃ i t a WORD_BOUNDARY b ɯː b ɯː WORD_BOUNDARY
b u u b u u WORD_BOUNDARY k i m a s h i t a WORD_BOUNDARY b u u b u u WORD_BOUNDARY