rivals irvals rvials vrials ivrals virals riavls iravls raivls arivls iarvls airvls rvails vrails ravils arvils varils avrils ivarls viarls iavrls aivrls vairls avirls rivlas irvlas rvilas vrilas ivrlas virlas rilvas irlvas rlivas lrivas ilrvas lirvas rvlias vrlias rlvias lrvias vlrias lvrias ivlras vilras ilvras livras vliras lviras rialvs iralvs railvs arilvs iarlvs airlvs rilavs irlavs rliavs lriavs ilravs liravs ralivs arlivs rlaivs lraivs alrivs larivs ialrvs ailrvs ilarvs liarvs alirvs lairvs rvalis vralis ravlis arvlis varlis avrlis rvlais vrlais rlvais lrvais vlrais lvrais ralvis arlvis rlavis lravis alrvis larvis valris avlris vlaris lvaris alvris lavris ivalrs vialrs iavlrs aivlrs vailrs avilrs ivlars vilars ilvars livars vliars lviars ialvrs ailvrs ilavrs liavrs alivrs laivrs valirs avlirs vlairs lvairs alvirs lavirs rivasl irvasl rviasl vriasl ivrasl virasl riavsl iravsl raivsl arivsl iarvsl airvsl rvaisl vraisl ravisl arvisl varisl avrisl ivarsl viarsl iavrsl aivrsl vairsl avirsl rivsal irvsal rvisal vrisal ivrsal virsal risval irsval rsival srival isrval sirval rvsial vrsial rsvial srvial vsrial svrial ivsral visral isvral sivral vsiral sviral riasvl irasvl raisvl arisvl iarsvl airsvl risavl irsavl rsiavl sriavl isravl siravl rasivl arsivl rsaivl sraivl asrivl sarivl iasrvl aisrvl isarvl siarvl asirvl sairvl rvasil vrasil ravsil arvsil varsil avrsil rvsail vrsail rsvail srvail vsrail svrail rasvil arsvil rsavil sravil asrvil sarvil vasril avsril vsaril svaril asvril savril ivasrl viasrl iavsrl aivsrl vaisrl avisrl ivsarl visarl isvarl sivarl vsiarl sviarl iasvrl aisvrl isavrl siavrl asivrl saivrl vasirl avsirl vsairl svairl asvirl savirl rivlsa irvlsa rvilsa vrilsa ivrlsa virlsa rilvsa irlvsa rlivsa lrivsa ilrvsa lirvsa rvlisa vrlisa rlvisa lrvisa vlrisa lvrisa ivlrsa vilrsa ilvrsa livrsa vlirsa lvirsa rivsla irvsla rvisla vrisla ivrsla virsla risvla irsvla rsivla srivla isrvla sirvla rvsila vrsila rsvila srvila vsrila svrila ivsrla visrla isvrla sivrla vsirla svirla rilsva irlsva rlisva lrisva ilrsva lirsva rislva irslva rsilva srilva isrlva sirlva rlsiva lrsiva rsliva srliva lsriva slriva ilsrva lisrva islrva silrva lsirva slirva rvlsia vrlsia rlvsia lrvsia vlrsia lvrsia rvslia vrslia rsvlia srvlia vsrlia svrlia rlsvia lrsvia rslvia srlvia lsrvia slrvia vlsria lvsria vslria svlria lsvria slvria ivlsra vilsra ilvsra livsra vlisra lvisra ivslra vislra isvlra sivlra vsilra svilra ilsvra lisvra islvra silvra lsivra slivra vlsira lvsira vslira svlira lsvira slvira rialsv iralsv railsv arilsv iarlsv airlsv rilasv irlasv rliasv lriasv ilrasv lirasv ralisv arlisv rlaisv lraisv alrisv larisv ialrsv ailrsv ilarsv liarsv alirsv lairsv riaslv iraslv raislv arislv iarslv airslv risalv irsalv rsialv srialv isralv siralv rasilv arsilv rsailv srailv asrilv sarilv iasrlv aisrlv isarlv siarlv asirlv sairlv rilsav irlsav rlisav lrisav ilrsav lirsav rislav irslav rsilav srilav isrlav sirlav rlsiav lrsiav rsliav srliav lsriav slriav ilsrav lisrav islrav silrav lsirav slirav ralsiv arlsiv rlasiv lrasiv alrsiv larsiv rasliv arsliv rsaliv sraliv asrliv sarliv rlsaiv lrsaiv rslaiv srlaiv lsraiv slraiv alsriv lasriv aslriv salriv lsariv slariv ialsrv ailsrv ilasrv liasrv alisrv laisrv iaslrv aislrv isalrv sialrv asilrv sailrv ilsarv lisarv islarv silarv lsiarv sliarv alsirv lasirv aslirv salirv lsairv slairv rvalsi vralsi ravlsi arvlsi varlsi avrlsi rvlasi vrlasi rlvasi lrvasi vlrasi lvrasi ralvsi arlvsi rlavsi lravsi alrvsi larvsi valrsi avlrsi vlarsi lvarsi alvrsi lavrsi rvasli vrasli ravsli arvsli varsli avrsli rvsali vrsali rsvali srvali vsrali svrali rasvli arsvli rsavli sravli asrvli sarvli vasrli avsrli vsarli svarli asvrli savrli rvlsai vrlsai rlvsai lrvsai vlrsai lvrsai rvslai vrslai rsvlai srvlai vsrlai svrlai rlsvai lrsvai rslvai srlvai lsrvai slrvai vlsrai lvsrai vslrai svlrai lsvrai slvrai ralsvi arlsvi rlasvi lrasvi alrsvi larsvi raslvi arslvi rsalvi sralvi asrlvi sarlvi rlsavi lrsavi rslavi srlavi lsravi slravi alsrvi lasrvi aslrvi salrvi lsarvi slarvi valsri avlsri vlasri lvasri alvsri lavsri vaslri avslri vsalri svalri asvlri savlri vlsari lvsari vslari svlari lsvari slvari alsvri lasvri aslvri salvri lsavri slavri ivalsr vialsr iavlsr aivlsr vailsr avilsr ivlasr vilasr ilvasr livasr vliasr lviasr ialvsr ailvsr ilavsr liavsr alivsr laivsr valisr avlisr vlaisr lvaisr alvisr lavisr ivaslr viaslr iavslr aivslr vaislr avislr ivsalr visalr isvalr sivalr vsialr svialr iasvlr aisvlr isavlr siavlr asivlr saivlr vasilr avsilr vsailr svailr asvilr savilr ivlsar vilsar ilvsar livsar vlisar lvisar ivslar vislar isvlar sivlar vsilar svilar ilsvar lisvar islvar silvar lsivar slivar vlsiar lvsiar vsliar svliar lsviar slviar ialsvr ailsvr ilasvr liasvr alisvr laisvr iaslvr aislvr isalvr sialvr asilvr sailvr ilsavr lisavr islavr silavr lsiavr sliavr alsivr lasivr aslivr salivr lsaivr slaivr valsir avlsir vlasir lvasir alvsir lavsir vaslir avslir vsalir svalir asvlir savlir vlsair lvsair vslair svlair lsvair slvair alsvir lasvir aslvir salvir lsavir slavir
Note: these 'words' (valid or invalid) are all the permutations of the word rivals. These words are obtained by scrambling the letters in rivals.