buubuu tte itteru ne
buubuu tte itteru ne .
b ɯː b ɯː WORD_BOUNDARY t t e WORD_BOUNDARY i t t e r ɯ WORD_BOUNDARY n e WORD_BOUNDARY
b u u b u u WORD_BOUNDARY t t e WORD_BOUNDARY i t t e r u WORD_BOUNDARY n e WORD_BOUNDARY