B A ba ba ba ba tit tit
b a ba ba ba ba tit tit .
b e WORD_BOUNDARY a WORD_BOUNDARY b a WORD_BOUNDARY b a WORD_BOUNDARY b a WORD_BOUNDARY b a WORD_BOUNDARY t i t WORD_BOUNDARY t i t WORD_BOUNDARY
b WORD_BOUNDARY a WORD_BOUNDARY b a WORD_BOUNDARY b a WORD_BOUNDARY b a WORD_BOUNDARY b a WORD_BOUNDARY t i t WORD_BOUNDARY t i t WORD_BOUNDARY