rental erntal rnetal nretal enrtal nertal retnal ertnal rtenal trenal etrnal ternal rnteal nrteal rtneal trneal ntreal tnreal entral netral etnral tenral nteral tneral renatl ernatl rneatl nreatl enratl neratl reantl erantl raentl arentl earntl aerntl rnaetl nraetl ranetl arnetl naretl anretl enartl neartl eanrtl aenrtl naertl anertl retanl ertanl rteanl treanl etranl teranl reatnl eratnl raetnl aretnl eartnl aertnl rtaenl traenl ratenl artenl tarenl atrenl etarnl tearnl eatrnl aetrnl taernl aternl rntael nrtael rtnael trnael ntrael tnrael rnatel nratel rantel arntel nartel anrtel rtanel tranel ratnel artnel tarnel atrnel ntarel tnarel natrel antrel tanrel atnrel entarl netarl etnarl tenarl ntearl tnearl enatrl neatrl eantrl aentrl naetrl anetrl etanrl teanrl eatnrl aetnrl taenrl atenrl ntaerl tnaerl naterl anterl tanerl atnerl rentla erntla rnetla nretla enrtla nertla retnla ertnla rtenla trenla etrnla ternla rntela nrtela rtnela trnela ntrela tnrela entrla netrla etnrla tenrla nterla tnerla renlta ernlta rnelta nrelta enrlta nerlta relnta erlnta rlenta lrenta elrnta lernta rnleta nrleta rlneta lrneta nlreta lnreta enlrta nelrta elnrta lenrta nlerta lnerta retlna ertlna rtelna trelna etrlna terlna reltna erltna rletna lretna elrtna lertna rtlena trlena rltena lrtena tlrena ltrena etlrna telrna eltrna letrna tlerna lterna rntlea nrtlea rtnlea trnlea ntrlea tnrlea rnltea nrltea rlntea lrntea nlrtea lnrtea rtlnea trlnea rltnea lrtnea tlrnea ltrnea ntlrea tnlrea nltrea lntrea tlnrea ltnrea entlra netlra etnlra tenlra ntelra tnelra enltra neltra elntra lentra nletra lnetra etlnra telnra eltnra letnra tlenra ltenra ntlera tnlera nltera lntera tlnera ltnera renalt ernalt rnealt nrealt enralt neralt reanlt eranlt raenlt arenlt earnlt aernlt rnaelt nraelt ranelt arnelt narelt anrelt enarlt nearlt eanrlt aenrlt naerlt anerlt renlat ernlat rnelat nrelat enrlat nerlat relnat erlnat rlenat lrenat elrnat lernat rnleat nrleat rlneat lrneat nlreat lnreat enlrat nelrat elnrat lenrat nlerat lnerat realnt eralnt raelnt arelnt earlnt aerlnt relant erlant rleant lreant elrant lerant ralent arlent rlaent lraent alrent larent ealrnt aelrnt elarnt learnt alernt laernt rnalet nralet ranlet arnlet narlet anrlet rnlaet nrlaet rlnaet lrnaet nlraet lnraet ralnet arlnet rlanet lranet alrnet larnet nalret anlret nlaret lnaret alnret lanret enalrt nealrt eanlrt aenlrt naelrt anelrt enlart nelart elnart lenart nleart lneart ealnrt aelnrt elanrt leanrt alenrt laenrt nalert anlert nlaert lnaert alnert lanert retaln ertaln rtealn trealn etraln teraln reatln eratln raetln aretln eartln aertln rtaeln traeln rateln arteln tareln atreln etarln tearln eatrln aetrln taerln aterln retlan ertlan rtelan trelan etrlan terlan reltan erltan rletan lretan elrtan lertan rtlean trlean rltean lrtean tlrean ltrean etlran telran eltran letran tleran lteran realtn eraltn raeltn areltn earltn aerltn relatn erlatn rleatn lreatn elratn leratn raletn arletn rlaetn lraetn alretn laretn ealrtn aelrtn elartn leartn alertn laertn rtalen tralen ratlen artlen tarlen atrlen rtlaen trlaen rltaen lrtaen tlraen ltraen ralten arlten rlaten lraten alrten larten talren atlren tlaren ltaren altren latren etalrn tealrn eatlrn aetlrn taelrn atelrn etlarn telarn eltarn letarn tlearn ltearn ealtrn aeltrn elatrn leatrn aletrn laetrn talern atlern tlaern ltaern altern latern rntale nrtale rtnale trnale ntrale tnrale rnatle nratle rantle arntle nartle anrtle rtanle tranle ratnle artnle tarnle atrnle ntarle tnarle natrle antrle tanrle atnrle rntlae nrtlae rtnlae trnlae ntrlae tnrlae rnltae nrltae rlntae lrntae nlrtae lnrtae rtlnae trlnae rltnae lrtnae tlrnae ltrnae ntlrae tnlrae nltrae lntrae tlnrae ltnrae rnalte nralte ranlte arnlte narlte anrlte rnlate nrlate rlnate lrnate nlrate lnrate ralnte arlnte rlante lrante alrnte larnte nalrte anlrte nlarte lnarte alnrte lanrte rtalne tralne ratlne artlne tarlne atrlne rtlane trlane rltane lrtane tlrane ltrane raltne arltne rlatne lratne alrtne lartne talrne atlrne tlarne ltarne altrne latrne ntalre tnalre natlre antlre tanlre atnlre ntlare tnlare nltare lntare tlnare ltnare naltre anltre nlatre lnatre alntre lantre talnre atlnre tlanre ltanre altnre latnre entalr netalr etnalr tenalr ntealr tnealr enatlr neatlr eantlr aentlr naetlr anetlr etanlr teanlr eatnlr aetnlr taenlr atenlr ntaelr tnaelr natelr antelr tanelr atnelr entlar netlar etnlar tenlar ntelar tnelar enltar neltar elntar lentar nletar lnetar etlnar telnar eltnar letnar tlenar ltenar ntlear tnlear nltear lntear tlnear ltnear enaltr nealtr eanltr aenltr naeltr aneltr enlatr nelatr elnatr lenatr nleatr lneatr ealntr aelntr elantr leantr alentr laentr naletr anletr nlaetr lnaetr alnetr lanetr etalnr tealnr eatlnr aetlnr taelnr atelnr etlanr telanr eltanr letanr tleanr lteanr ealtnr aeltnr elatnr leatnr aletnr laetnr talenr atlenr tlaenr ltaenr altenr latenr ntaler tnaler natler antler tanler atnler ntlaer tnlaer nltaer lntaer tlnaer ltnaer nalter anlter nlater lnater alnter lanter talner atlner tlaner ltaner altner latner
Note: these 'words' (valid or invalid) are all the permutations of the word rental. These words are obtained by scrambling the letters in rental.