breer rbeer berer ebrer reber erber breer rbeer berer ebrer reber erber beerr eberr beerr eberr eebrr eebrr reebr erebr reebr erebr eerbr eerbr brere rbere berre ebrre rebre erbre brree rbree brree rbree rrbee rrbee berre ebrre brere rbere erbre rebre rerbe errbe rrebe rrebe errbe rerbe brere rbere berre ebrre rebre erbre brree rbree brree rbree rrbee rrbee berre ebrre brere rbere erbre rebre rerbe errbe rrebe rrebe errbe rerbe beerr eberr beerr eberr eebrr eebrr berer ebrer breer rbeer erber reber berer ebrer breer rbeer erber reber eerbr eerbr erebr reebr erebr reebr reerb ererb reerb ererb eerrb eerrb rereb erreb rreeb rreeb erreb rereb rereb erreb rreeb rreeb erreb rereb eerrb eerrb ererb reerb ererb reerb
Note: these 'words' (valid or invalid) are all the permutations of the word breer. These words are obtained by scrambling the letters in breer.