baibai tte baibai tte
baibai tte baibai tte .
b a i b a i WORD_BOUNDARY t t e WORD_BOUNDARY b a i b a i WORD_BOUNDARY t t e WORD_BOUNDARY
b a i b a i WORD_BOUNDARY t t e WORD_BOUNDARY b a i b a i WORD_BOUNDARY t t e WORD_BOUNDARY