prials rpials pirals iprals ripals irpals prails rpails parils aprils rapils arpils piarls iparls pairls apirls iaprls aiprls riapls irapls raipls aripls iarpls airpls prilas rpilas pirlas iprlas riplas irplas prlias rplias plrias lprias rlpias lrpias pilras iplras pliras lpiras ilpras lipras rilpas irlpas rlipas lripas ilrpas lirpas pralis rpalis parlis aprlis raplis arplis prlais rplais plrais lprais rlpais lrpais palris aplris plaris lparis alpris lapris ralpis arlpis rlapis lrapis alrpis larpis pialrs ipalrs pailrs apilrs iaplrs aiplrs pilars iplars pliars lpiars ilpars lipars palirs aplirs plairs lpairs alpirs lapirs ialprs ailprs ilaprs liaprs aliprs laiprs rialps iralps railps arilps iarlps airlps rilaps irlaps rliaps lriaps ilraps liraps ralips arlips rlaips lraips alrips larips ialrps ailrps ilarps liarps alirps lairps priasl rpiasl pirasl iprasl ripasl irpasl praisl rpaisl parisl aprisl rapisl arpisl piarsl iparsl pairsl apirsl iaprsl aiprsl riapsl irapsl raipsl aripsl iarpsl airpsl prisal rpisal pirsal iprsal ripsal irpsal prsial rpsial psrial sprial rspial srpial pisral ipsral psiral spiral ispral sipral rispal irspal rsipal sripal isrpal sirpal prasil rpasil parsil aprsil rapsil arpsil prsail rpsail psrail sprail rspail srpail pasril apsril psaril sparil aspril sapril raspil arspil rsapil srapil asrpil sarpil piasrl ipasrl paisrl apisrl iapsrl aipsrl pisarl ipsarl psiarl spiarl isparl siparl pasirl apsirl psairl spairl aspirl sapirl iasprl aisprl isaprl siaprl asiprl saiprl riaspl iraspl raispl arispl iarspl airspl risapl irsapl rsiapl sriapl israpl sirapl rasipl arsipl rsaipl sraipl asripl saripl iasrpl aisrpl isarpl siarpl asirpl sairpl prilsa rpilsa pirlsa iprlsa riplsa irplsa prlisa rplisa plrisa lprisa rlpisa lrpisa pilrsa iplrsa plirsa lpirsa ilprsa liprsa rilpsa irlpsa rlipsa lripsa ilrpsa lirpsa prisla rpisla pirsla iprsla ripsla irpsla prsila rpsila psrila sprila rspila srpila pisrla ipsrla psirla spirla isprla siprla rispla irspla rsipla sripla isrpla sirpla prlsia rplsia plrsia lprsia rlpsia lrpsia prslia rpslia psrlia sprlia rsplia srplia plsria lpsria pslria splria lspria slpria rlspia lrspia rslpia srlpia lsrpia slrpia pilsra iplsra plisra lpisra ilpsra lipsra pislra ipslra psilra spilra isplra siplra plsira lpsira pslira splira lspira slpira ilspra lispra islpra silpra lsipra slipra rilspa irlspa rlispa lrispa ilrspa lirspa rislpa irslpa rsilpa srilpa isrlpa sirlpa rlsipa lrsipa rslipa srlipa lsripa slripa ilsrpa lisrpa islrpa silrpa lsirpa slirpa pralsi rpalsi parlsi aprlsi raplsi arplsi prlasi rplasi plrasi lprasi rlpasi lrpasi palrsi aplrsi plarsi lparsi alprsi laprsi ralpsi arlpsi rlapsi lrapsi alrpsi larpsi prasli rpasli parsli aprsli rapsli arpsli prsali rpsali psrali sprali rspali srpali pasrli apsrli psarli sparli asprli saprli raspli arspli rsapli srapli asrpli sarpli prlsai rplsai plrsai lprsai rlpsai lrpsai prslai rpslai psrlai sprlai rsplai srplai plsrai lpsrai pslrai splrai lsprai slprai rlspai lrspai rslpai srlpai lsrpai slrpai palsri aplsri plasri lpasri alpsri lapsri paslri apslri psalri spalri asplri saplri plsari lpsari pslari splari lspari slpari alspri laspri aslpri salpri lsapri slapri ralspi arlspi rlaspi lraspi alrspi larspi raslpi arslpi rsalpi sralpi asrlpi sarlpi rlsapi lrsapi rslapi srlapi lsrapi slrapi alsrpi lasrpi aslrpi salrpi lsarpi slarpi pialsr ipalsr pailsr apilsr iaplsr aiplsr pilasr iplasr pliasr lpiasr ilpasr lipasr palisr aplisr plaisr lpaisr alpisr lapisr ialpsr ailpsr ilapsr liapsr alipsr laipsr piaslr ipaslr paislr apislr iapslr aipslr pisalr ipsalr psialr spialr ispalr sipalr pasilr apsilr psailr spailr aspilr sapilr iasplr aisplr isaplr siaplr asiplr saiplr pilsar iplsar plisar lpisar ilpsar lipsar pislar ipslar psilar spilar isplar siplar plsiar lpsiar psliar spliar lspiar slpiar ilspar lispar islpar silpar lsipar slipar palsir aplsir plasir lpasir alpsir lapsir paslir apslir psalir spalir asplir saplir plsair lpsair pslair splair lspair slpair alspir laspir aslpir salpir lsapir slapir ialspr ailspr ilaspr liaspr alispr laispr iaslpr aislpr isalpr sialpr asilpr sailpr ilsapr lisapr islapr silapr lsiapr sliapr alsipr lasipr aslipr salipr lsaipr slaipr rialsp iralsp railsp arilsp iarlsp airlsp rilasp irlasp rliasp lriasp ilrasp lirasp ralisp arlisp rlaisp lraisp alrisp larisp ialrsp ailrsp ilarsp liarsp alirsp lairsp riaslp iraslp raislp arislp iarslp airslp risalp irsalp rsialp srialp isralp siralp rasilp arsilp rsailp srailp asrilp sarilp iasrlp aisrlp isarlp siarlp asirlp sairlp rilsap irlsap rlisap lrisap ilrsap lirsap rislap irslap rsilap srilap isrlap sirlap rlsiap lrsiap rsliap srliap lsriap slriap ilsrap lisrap islrap silrap lsirap slirap ralsip arlsip rlasip lrasip alrsip larsip raslip arslip rsalip sralip asrlip sarlip rlsaip lrsaip rslaip srlaip lsraip slraip alsrip lasrip aslrip salrip lsarip slarip ialsrp ailsrp ilasrp liasrp alisrp laisrp iaslrp aislrp isalrp sialrp asilrp sailrp ilsarp lisarp islarp silarp lsiarp sliarp alsirp lasirp aslirp salirp lsairp slairp
Note: these 'words' (valid or invalid) are all the permutations of the word prials. These words are obtained by scrambling the letters in prials.