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