perils eprils preils rpeils erpils repils peirls epirls pierls iperls eiprls ieprls priels rpiels pirels iprels ripels irpels eripls reipls eirpls ierpls riepls irepls perlis eprlis prelis rpelis erplis replis pelris eplris pleris lperis elpris lepris prleis rpleis plreis lpreis rlpeis lrpeis erlpis relpis elrpis lerpis rlepis lrepis peilrs epilrs pielrs ipelrs eiplrs ieplrs pelirs eplirs pleirs lpeirs elpirs lepirs pilers iplers pliers lpiers ilpers lipers eilprs ielprs eliprs leiprs ileprs lieprs priles rpiles pirles iprles riples irples prlies rplies plries lpries rlpies lrpies pilres iplres plires lpires ilpres lipres rilpes irlpes rlipes lripes ilrpes lirpes erilps reilps eirlps ierlps rielps irelps erlips relips elrips lerips rleips lreips eilrps ielrps elirps leirps ilerps lierps rileps irleps rlieps lrieps ilreps lireps perisl eprisl preisl rpeisl erpisl repisl peirsl epirsl piersl ipersl eiprsl ieprsl priesl rpiesl piresl ipresl ripesl irpesl eripsl reipsl eirpsl ierpsl riepsl irepsl persil eprsil presil rpesil erpsil repsil pesril epsril pseril speril espril sepril prseil rpseil psreil spreil rspeil srpeil erspil respil esrpil serpil rsepil srepil peisrl episrl piesrl ipesrl eipsrl iepsrl pesirl epsirl pseirl speirl espirl sepirl piserl ipserl psierl spierl isperl siperl eisprl iesprl esiprl seiprl iseprl sieprl prisel rpisel pirsel iprsel ripsel irpsel prsiel rpsiel psriel spriel rspiel srpiel pisrel ipsrel psirel spirel isprel siprel rispel irspel rsipel sripel isrpel sirpel erispl reispl eirspl ierspl riespl irespl ersipl resipl esripl seripl rseipl sreipl eisrpl iesrpl esirpl seirpl iserpl sierpl risepl irsepl rsiepl sriepl isrepl sirepl perlsi eprlsi prelsi rpelsi erplsi replsi pelrsi eplrsi plersi lpersi elprsi leprsi prlesi rplesi plresi lpresi rlpesi lrpesi erlpsi relpsi elrpsi lerpsi rlepsi lrepsi persli eprsli presli rpesli erpsli repsli pesrli epsrli pserli sperli esprli seprli prseli rpseli psreli spreli rspeli srpeli erspli respli esrpli serpli rsepli srepli pelsri eplsri plesri lpesri elpsri lepsri peslri epslri pselri spelri esplri seplri plseri lpseri psleri spleri lsperi slperi elspri lespri eslpri selpri lsepri slepri prlsei rplsei plrsei lprsei rlpsei lrpsei prslei rpslei psrlei sprlei rsplei srplei plsrei lpsrei pslrei splrei lsprei slprei rlspei lrspei rslpei srlpei lsrpei slrpei erlspi relspi elrspi lerspi rlespi lrespi erslpi reslpi esrlpi serlpi rselpi srelpi elsrpi lesrpi eslrpi selrpi lserpi slerpi rlsepi lrsepi rslepi srlepi lsrepi slrepi peilsr epilsr pielsr ipelsr eiplsr ieplsr pelisr eplisr pleisr lpeisr elpisr lepisr pilesr iplesr pliesr lpiesr ilpesr lipesr eilpsr ielpsr elipsr leipsr ilepsr liepsr peislr epislr pieslr ipeslr eipslr iepslr pesilr epsilr pseilr speilr espilr sepilr piselr ipselr psielr spielr ispelr sipelr eisplr iesplr esiplr seiplr iseplr sieplr pelsir eplsir plesir lpesir elpsir lepsir peslir epslir pselir spelir esplir seplir plseir lpseir psleir spleir lspeir slpeir elspir lespir eslpir selpir lsepir slepir pilser iplser pliser lpiser ilpser lipser pisler ipsler psiler spiler ispler sipler plsier lpsier pslier splier lspier slpier ilsper lisper islper silper lsiper sliper eilspr ielspr elispr leispr ilespr liespr eislpr ieslpr esilpr seilpr iselpr sielpr elsipr lesipr eslipr selipr lseipr sleipr ilsepr lisepr islepr silepr lsiepr sliepr prilse rpilse pirlse iprlse riplse irplse prlise rplise plrise lprise rlpise lrpise pilrse iplrse plirse lpirse ilprse liprse rilpse irlpse rlipse lripse ilrpse lirpse prisle rpisle pirsle iprsle ripsle irpsle prsile rpsile psrile sprile rspile srpile pisrle ipsrle psirle spirle isprle siprle risple irsple rsiple sriple isrple sirple prlsie rplsie plrsie lprsie rlpsie lrpsie prslie rpslie psrlie sprlie rsplie srplie plsrie lpsrie pslrie splrie lsprie slprie rlspie lrspie rslpie srlpie lsrpie slrpie pilsre iplsre plisre lpisre ilpsre lipsre pislre ipslre psilre spilre isplre siplre plsire lpsire pslire splire lspire slpire ilspre lispre islpre silpre lsipre slipre rilspe irlspe rlispe lrispe ilrspe lirspe rislpe irslpe rsilpe srilpe isrlpe sirlpe rlsipe lrsipe rslipe srlipe lsripe slripe ilsrpe lisrpe islrpe silrpe lsirpe slirpe erilsp reilsp eirlsp ierlsp rielsp irelsp erlisp relisp elrisp lerisp rleisp lreisp eilrsp ielrsp elirsp leirsp ilersp liersp rilesp irlesp rliesp lriesp ilresp liresp erislp reislp eirslp ierslp rieslp ireslp ersilp resilp esrilp serilp rseilp sreilp eisrlp iesrlp esirlp seirlp iserlp sierlp riselp irselp rsielp srielp isrelp sirelp erlsip relsip elrsip lersip rlesip lresip erslip reslip esrlip serlip rselip srelip elsrip lesrip eslrip selrip lserip slerip rlseip lrseip rsleip srleip lsreip slreip eilsrp ielsrp elisrp leisrp ilesrp liesrp eislrp ieslrp esilrp seilrp iselrp sielrp elsirp lesirp eslirp selirp lseirp sleirp ilserp liserp islerp silerp lsierp slierp rilsep irlsep rlisep lrisep ilrsep lirsep rislep irslep rsilep srilep isrlep sirlep rlsiep lrsiep rsliep srliep lsriep slriep ilsrep lisrep islrep silrep lsirep slirep
Note: these 'words' (valid or invalid) are all the permutations of the word perils. These words are obtained by scrambling the letters in perils.