arcer racer acrer carer rcaer craer arecr raecr aercr earcr reacr eracr acerr caerr aecrr eacrr cearr ecarr rcear crear recar ercar cerar ecrar arcre racre acrre carre rcare crare arrce rarce arrce rarce rrace rrace acrre carre arcre racre crare rcare rcrae crrae rrcae rrcae crrae rcrae arerc raerc aerrc earrc rearc erarc arrec rarec arrec rarec rraec rraec aerrc earrc arerc raerc erarc rearc rerac errac rreac rreac errac rerac acerr caerr aecrr eacrr cearr ecarr acrer carer arcer racer craer rcaer aercr earcr arecr raecr eracr reacr cerar ecrar crear rcear ercar recar rcera crera recra ercra cerra ecrra rcrea crrea rrcea rrcea crrea rcrea rerca errca rreca rreca errca rerca cerra ecrra crera rcera ercra recra
Note: these 'words' (valid or invalid) are all the permutations of the word arcer. These words are obtained by scrambling the letters in arcer.