srvca rsvca svrca vsrca rvsca vrsca srcva rscva scrva csrva rcsva crsva svcra vscra scvra csvra vcsra cvsra rvcsa vrcsa rcvsa crvsa vcrsa cvrsa srvac rsvac svrac vsrac rvsac vrsac sravc rsavc sarvc asrvc rasvc arsvc svarc vsarc savrc asvrc vasrc avsrc rvasc vrasc ravsc arvsc varsc avrsc srcav rscav scrav csrav rcsav crsav sracv rsacv sarcv asrcv rascv arscv scarv csarv sacrv ascrv casrv acsrv rcasv crasv racsv arcsv carsv acrsv svcar vscar scvar csvar vcsar cvsar svacr vsacr savcr asvcr vascr avscr scavr csavr sacvr ascvr casvr acsvr vcasr cvasr vacsr avcsr cavsr acvsr rvcas vrcas rcvas crvas vcras cvras rvacs vracs ravcs arvcs varcs avrcs rcavs cravs racvs arcvs carvs acrvs vcars cvars vacrs avcrs cavrs acvrs
Note: these 'words' (valid or invalid) are all the permutations of the word srvca. These words are obtained by scrambling the letters in srvca.