creav rceav cerav ecrav recav ercav craev rcaev carev acrev racev arcev cearv ecarv caerv acerv eacrv aecrv reacv eracv raecv arecv earcv aercv creva rceva cerva ecrva recva ercva crvea rcvea cvrea vcrea rvcea vrcea cevra ecvra cvera vcera evcra vecra revca ervca rveca vreca evrca verca crave rcave carve acrve racve arcve crvae rcvae cvrae vcrae rvcae vrcae cavre acvre cvare vcare avcre vacre ravce arvce rvace vrace avrce varce ceavr ecavr caevr acevr eacvr aecvr cevar ecvar cvear vcear evcar vecar caver acver cvaer vcaer avcer vacer eavcr aevcr evacr veacr avecr vaecr reavc eravc raevc arevc earvc aervc revac ervac rveac vreac evrac verac ravec arvec rvaec vraec avrec varec eavrc aevrc evarc vearc averc vaerc
Note: these 'words' (valid or invalid) are all the permutations of the word creav. These words are obtained by scrambling the letters in creav.