rcsvu crsvu rscvu srcvu csrvu scrvu rcvsu crvsu rvcsu vrcsu cvrsu vcrsu rsvcu srvcu rvscu vrscu svrcu vsrcu csvru scvru cvsru vcsru svcru vscru rcsuv crsuv rscuv srcuv csruv scruv rcusv crusv rucsv urcsv cursv ucrsv rsucv srucv ruscv urscv surcv usrcv csurv scurv cusrv ucsrv sucrv uscrv rcvus crvus rvcus vrcus cvrus vcrus rcuvs cruvs rucvs urcvs curvs ucrvs rvucs vrucs ruvcs urvcs vurcs uvrcs cvurs vcurs cuvrs ucvrs vucrs uvcrs rsvuc srvuc rvsuc vrsuc svruc vsruc rsuvc sruvc rusvc ursvc survc usrvc rvusc vrusc ruvsc urvsc vursc uvrsc svurc vsurc suvrc usvrc vusrc uvsrc csvur scvur cvsur vcsur svcur vscur csuvr scuvr cusvr ucsvr sucvr uscvr cvusr vcusr cuvsr ucvsr vucsr uvcsr svucr vsucr suvcr usvcr vuscr uvscr
Note: these 'words' (valid or invalid) are all the permutations of the word rcsvu. These words are obtained by scrambling the letters in rcsvu.