cruve rcuve curve ucrve rucve urcve crvue rcvue cvrue vcrue rvcue vrcue cuvre ucvre cvure vcure uvcre vucre ruvce urvce rvuce vruce uvrce vurce cruev rcuev curev ucrev rucev urcev creuv rceuv ceruv ecruv recuv ercuv cuerv ucerv ceurv ecurv uecrv eucrv ruecv urecv reucv erucv uercv eurcv crveu rcveu cvreu vcreu rvceu vrceu crevu rcevu cervu ecrvu recvu ercvu cveru vceru cevru ecvru vecru evcru rvecu vrecu revcu ervcu vercu evrcu cuver ucver cvuer vcuer uvcer vucer cuevr ucevr ceuvr ecuvr uecvr eucvr cveur vceur cevur ecvur vecur evcur uvecr vuecr uevcr euvcr veucr evucr ruvec urvec rvuec vruec uvrec vurec ruevc urevc reuvc eruvc uervc eurvc rveuc vreuc revuc ervuc veruc evruc uverc vuerc uevrc euvrc veurc evurc
Note: these 'words' (valid or invalid) are all the permutations of the word cruve. These words are obtained by scrambling the letters in cruve.