blu blu blu blu blu
blu blu blu blu blu !
β l u WORD_BOUNDARY β l u WORD_BOUNDARY β l u WORD_BOUNDARY β l u WORD_BOUNDARY β l u WORD_BOUNDARY
b l u WORD_BOUNDARY b l u WORD_BOUNDARY b l u WORD_BOUNDARY b l u WORD_BOUNDARY b l u WORD_BOUNDARY ! WORD_BOUNDARY