mirvs imrvs mrivs rmivs irmvs rimvs mivrs imvrs mvirs vmirs ivmrs vimrs mrvis rmvis mvris vmris rvmis vrmis irvms rivms ivrms virms rvims vrims mirsv imrsv mrisv rmisv irmsv rimsv misrv imsrv msirv smirv ismrv simrv mrsiv rmsiv msriv smriv rsmiv srmiv irsmv rismv isrmv sirmv rsimv srimv mivsr imvsr mvisr vmisr ivmsr vimsr misvr imsvr msivr smivr ismvr simvr mvsir vmsir msvir smvir vsmir svmir ivsmr vismr isvmr sivmr vsimr svimr mrvsi rmvsi mvrsi vmrsi rvmsi vrmsi mrsvi rmsvi msrvi smrvi rsmvi srmvi mvsri vmsri msvri smvri vsmri svmri rvsmi vrsmi rsvmi srvmi vsrmi svrmi irvsm rivsm ivrsm virsm rvism vrism irsvm risvm isrvm sirvm rsivm srivm ivsrm visrm isvrm sivrm vsirm svirm rvsim vrsim rsvim srvim vsrim svrim
Note: these 'words' (valid or invalid) are all the permutations of the word mirvs. These words are obtained by scrambling the letters in mirvs.