leters elters lteers tleers etlers telers leetrs eletrs leetrs eletrs eeltrs eeltrs lteers tleers leters elters telers etlers etelrs teelrs eetlrs eetlrs teelrs etelrs letres eltres lteres tleres etlres telres lertes elrtes lretes rletes erltes reltes ltrees tlrees lrtees rltees trlees rtlees etrles terles ertles retles treles rteles leerts elerts leerts elerts eelrts eelrts lerets elrets lreets rleets erlets relets lerets elrets lreets rleets erlets relets eerlts eerlts erelts reelts erelts reelts lteres tleres letres eltres telres etlres ltrees tlrees lrtees rltees trlees rtlees lertes elrtes lretes rletes erltes reltes terles etrles treles rteles ertles retles eterls teerls eetrls eetrls teerls eterls etrels terels ertels retels treels rteels eertls eertls eretls reetls eretls reetls terels etrels treels rteels ertels retels letesr eltesr lteesr tleesr etlesr telesr leetsr eletsr leetsr eletsr eeltsr eeltsr lteesr tleesr letesr eltesr telesr etlesr etelsr teelsr eetlsr eetlsr teelsr etelsr letser eltser lteser tleser etlser telser lester elster lseter sleter eslter selter ltseer tlseer lsteer slteer tsleer stleer etsler tesler estler setler tseler steler leestr elestr leestr elestr eelstr eelstr lesetr elsetr lseetr sleetr esletr seletr lesetr elsetr lseetr sleetr esletr seletr eesltr eesltr eseltr seeltr eseltr seeltr lteser tleser letser eltser telser etlser ltseer tlseer lsteer slteer tsleer stleer lester elster lseter sleter eslter selter tesler etsler tseler steler estler setler eteslr teeslr eetslr eetslr teeslr eteslr etselr teselr estelr setelr tseelr steelr eestlr eestlr esetlr seetlr esetlr seetlr teselr etselr tseelr steelr estelr setelr letrse eltrse lterse tlerse etlrse telrse lertse elrtse lretse rletse erltse reltse ltrese tlrese lrtese rltese trlese rtlese etrlse terlse ertlse retlse trelse rtelse letsre eltsre ltesre tlesre etlsre telsre lestre elstre lsetre sletre esltre seltre ltsere tlsere lstere sltere tslere stlere etslre teslre estlre setlre tselre stelre lerste elrste lreste rleste erlste relste lesrte elsrte lserte slerte eslrte selrte lrsete rlsete lsrete slrete rslete srlete erslte reslte esrlte serlte rselte srelte ltrsee tlrsee lrtsee rltsee trlsee rtlsee ltsree tlsree lstree sltree tslree stlree lrstee rlstee lsrtee slrtee rsltee srltee trslee rtslee tsrlee strlee rstlee srtlee etrsle tersle ertsle retsle tresle rtesle etsrle tesrle estrle setrle tserle sterle erstle restle esrtle sertle rsetle sretle trsele rtsele tsrele strele rstele srtele leerst elerst leerst elerst eelrst eelrst lerest elrest lreest rleest erlest relest lerest elrest lreest rleest erlest relest eerlst eerlst erelst reelst erelst reelst leesrt elesrt leesrt elesrt eelsrt eelsrt lesert elsert lseert sleert eslert selert lesert elsert lseert sleert eslert selert eeslrt eeslrt eselrt seelrt eselrt seelrt lerset elrset lreset rleset erlset relset lesret elsret lseret sleret eslret selret lrseet rlseet lsreet slreet rsleet srleet erslet reslet esrlet serlet rselet srelet lerset elrset lreset rleset erlset relset lesret elsret lseret sleret eslret selret lrseet rlseet lsreet slreet rsleet srleet erslet reslet esrlet serlet rselet srelet eerslt eerslt ereslt reeslt ereslt reeslt eesrlt eesrlt eserlt seerlt eserlt seerlt erselt reselt esrelt serelt rseelt sreelt erselt reselt esrelt serelt rseelt sreelt lterse tlerse letrse eltrse telrse etlrse ltrese tlrese lrtese rltese trlese rtlese lertse elrtse lretse rletse erltse reltse terlse etrlse trelse rtelse ertlse retlse ltesre tlesre letsre eltsre telsre etlsre ltsere tlsere lstere sltere tslere stlere lestre elstre lsetre sletre esltre seltre teslre etslre tselre stelre estlre setlre ltrsee tlrsee lrtsee rltsee trlsee rtlsee ltsree tlsree lstree sltree tslree stlree lrstee rlstee lsrtee slrtee rsltee srltee trslee rtslee tsrlee strlee rstlee srtlee lerste elrste lreste rleste erlste relste lesrte elsrte lserte slerte eslrte selrte lrsete rlsete lsrete slrete rslete srlete erslte reslte esrlte serlte rselte srelte tersle etrsle tresle rtesle ertsle retsle tesrle etsrle tserle sterle estrle setrle trsele rtsele tsrele strele rstele srtele erstle restle esrtle sertle rsetle sretle etersl teersl eetrsl eetrsl teersl etersl etresl teresl ertesl retesl treesl rteesl eertsl eertsl eretsl reetsl eretsl reetsl teresl etresl treesl rteesl ertesl retesl etesrl teesrl eetsrl eetsrl teesrl etesrl etserl teserl esterl seterl tseerl steerl eestrl eestrl esetrl seetrl esetrl seetrl teserl etserl tseerl steerl esterl seterl etrsel tersel ertsel retsel tresel rtesel etsrel tesrel estrel setrel tserel sterel erstel restel esrtel sertel rsetel sretel trseel rtseel tsreel streel rsteel srteel eerstl eerstl erestl reestl erestl reestl eesrtl eesrtl esertl seertl esertl seertl ersetl resetl esretl seretl rseetl sreetl ersetl resetl esretl seretl rseetl sreetl tersel etrsel tresel rtesel ertsel retsel tesrel etsrel tserel sterel estrel setrel trseel rtseel tsreel streel rsteel srteel erstel restel esrtel sertel rsetel sretel
Note: these 'words' (valid or invalid) are all the permutations of the word leters. These words are obtained by scrambling the letters in leters.