brrrr brrmm brmm brrmm
brrrr brrmm brmm brrmm .
b r r r r WORD_BOUNDARY b r r m m WORD_BOUNDARY b r m m WORD_BOUNDARY b r r m m WORD_BOUNDARY
b r r r r WORD_BOUNDARY b r r m m WORD_BOUNDARY b r m m WORD_BOUNDARY b r r m m WORD_BOUNDARY . WORD_BOUNDARY