paster apster psater spater aspter sapter patser aptser ptaser tpaser atpser tapser pstaer sptaer ptsaer tpsaer stpaer tspaer astper satper atsper tasper staper tsaper pasetr apsetr psaetr spaetr aspetr sapetr paestr apestr peastr epastr aepstr eapstr pseatr speatr pesatr epsatr sepatr espatr aseptr saeptr aesptr easptr seaptr esaptr patesr aptesr ptaesr tpaesr atpesr tapesr paetsr apetsr peatsr epatsr aeptsr eaptsr pteasr tpeasr petasr eptasr tepasr etpasr atepsr taepsr aetpsr eatpsr teapsr etapsr pstear sptear ptsear tpsear stpear tspear psetar spetar pestar epstar septar esptar ptesar tpesar petsar eptsar tepsar etpsar stepar tsepar setpar estpar tespar etspar astepr satepr atsepr tasepr staepr tsaepr asetpr saetpr aestpr eastpr seatpr esatpr atespr taespr aetspr eatspr teaspr etaspr steapr tseapr setapr estapr tesapr etsapr pastre apstre psatre spatre asptre saptre patsre aptsre ptasre tpasre atpsre tapsre pstare sptare ptsare tpsare stpare tspare astpre satpre atspre taspre stapre tsapre pasrte apsrte psarte sparte asprte saprte parste aprste praste rpaste arpste rapste psrate sprate prsate rpsate srpate rspate asrpte sarpte arspte raspte srapte rsapte patrse aptrse ptarse tparse atprse taprse partse aprtse pratse rpatse arptse raptse ptrase tprase prtase rptase trpase rtpase atrpse tarpse artpse ratpse trapse rtapse pstrae sptrae ptsrae tpsrae stprae tsprae psrtae sprtae prstae rpstae srptae rsptae ptrsae tprsae prtsae rptsae trpsae rtpsae strpae tsrpae srtpae rstpae trspae rtspae astrpe satrpe atsrpe tasrpe starpe tsarpe asrtpe sartpe arstpe rastpe sratpe rsatpe atrspe tarspe artspe ratspe traspe rtaspe strape tsrape srtape rstape trsape rtsape pasert apsert psaert spaert aspert sapert paesrt apesrt peasrt epasrt aepsrt eapsrt pseart speart pesart epsart separt espart aseprt saeprt aesprt easprt seaprt esaprt pasret apsret psaret sparet aspret sapret parset aprset praset rpaset arpset rapset psraet spraet prsaet rpsaet srpaet rspaet asrpet sarpet arspet raspet srapet rsapet paerst aperst pearst eparst aeprst eaprst parest aprest praest rpaest arpest rapest perast eprast preast rpeast erpast repast aerpst earpst arepst raepst erapst reapst pserat sperat pesrat epsrat seprat esprat psreat spreat prseat rpseat srpeat rspeat persat eprsat presat rpesat erpsat repsat serpat esrpat srepat rsepat erspat respat aserpt saerpt aesrpt easrpt searpt esarpt asrept sarept arsept rasept sraept rsaept aerspt earspt arespt raespt eraspt reaspt serapt esrapt sreapt rseapt ersapt resapt paters apters ptaers tpaers atpers tapers paetrs apetrs peatrs epatrs aeptrs eaptrs ptears tpears petars eptars tepars etpars ateprs taeprs aetprs eatprs teaprs etaprs patres aptres ptares tpares atpres tapres partes aprtes prates rpates arptes raptes ptraes tpraes prtaes rptaes trpaes rtpaes atrpes tarpes artpes ratpes trapes rtapes paerts aperts pearts eparts aeprts eaprts parets aprets praets rpaets arpets rapets perats eprats preats rpeats erpats repats aerpts earpts arepts raepts erapts reapts pteras tperas petras eptras tepras etpras ptreas tpreas prteas rpteas trpeas rtpeas pertas eprtas pretas rpetas erptas reptas terpas etrpas trepas rtepas ertpas retpas aterps taerps aetrps eatrps tearps etarps atreps tareps arteps rateps traeps rtaeps aertps eartps aretps raetps eratps reatps teraps etraps treaps rteaps ertaps retaps pstera sptera ptsera tpsera stpera tspera psetra spetra pestra epstra septra esptra ptesra tpesra petsra eptsra tepsra etpsra stepra tsepra setpra estpra tespra etspra pstrea sptrea ptsrea tpsrea stprea tsprea psrtea sprtea prstea rpstea srptea rsptea ptrsea tprsea prtsea rptsea trpsea rtpsea strpea tsrpea srtpea rstpea trspea rtspea pserta sperta pesrta epsrta seprta esprta psreta spreta prseta rpseta srpeta rspeta persta eprsta presta rpesta erpsta repsta serpta esrpta srepta rsepta erspta respta ptersa tpersa petrsa eptrsa teprsa etprsa ptresa tpresa prtesa rptesa trpesa rtpesa pertsa eprtsa pretsa rpetsa erptsa reptsa terpsa etrpsa trepsa rtepsa ertpsa retpsa sterpa tserpa setrpa estrpa tesrpa etsrpa strepa tsrepa srtepa rstepa trsepa rtsepa sertpa esrtpa sretpa rsetpa erstpa restpa terspa etrspa trespa rtespa ertspa retspa asterp saterp atserp taserp staerp tsaerp asetrp saetrp aestrp eastrp seatrp esatrp atesrp taesrp aetsrp eatsrp teasrp etasrp stearp tsearp setarp estarp tesarp etsarp astrep satrep atsrep tasrep starep tsarep asrtep sartep arstep rastep sratep rsatep atrsep tarsep artsep ratsep trasep rtasep straep tsraep srtaep rstaep trsaep rtsaep asertp saertp aesrtp easrtp seartp esartp asretp saretp arsetp rasetp sraetp rsaetp aerstp earstp arestp raestp erastp reastp seratp esratp sreatp rseatp ersatp resatp atersp taersp aetrsp eatrsp tearsp etarsp atresp taresp artesp ratesp traesp rtaesp aertsp eartsp aretsp raetsp eratsp reatsp terasp etrasp treasp rteasp ertasp retasp sterap tserap setrap estrap tesrap etsrap streap tsreap srteap rsteap trseap rtseap sertap esrtap sretap rsetap erstap restap tersap etrsap tresap rtesap ertsap retsap
Note: these 'words' (valid or invalid) are all the permutations of the word paster. These words are obtained by scrambling the letters in paster.