B A ba ba T U tu tu
b a ba ba t u tu tu .
b e WORD_BOUNDARY a WORD_BOUNDARY b a WORD_BOUNDARY b a WORD_BOUNDARY t e WORD_BOUNDARY u WORD_BOUNDARY t u WORD_BOUNDARY t u WORD_BOUNDARY
b WORD_BOUNDARY a WORD_BOUNDARY b a WORD_BOUNDARY b a WORD_BOUNDARY t WORD_BOUNDARY u WORD_BOUNDARY t u WORD_BOUNDARY t u WORD_BOUNDARY