perais eprais preais rpeais erpais repais pearis eparis paeris aperis eapris aepris praeis rpaeis pareis apreis rapeis arpeis erapis reapis earpis aerpis raepis arepis perias eprias preias rpeias erpias repias peiras epiras pieras iperas eipras iepras prieas rpieas pireas ipreas ripeas irpeas eripas reipas eirpas ierpas riepas irepas peairs epairs paeirs apeirs eapirs aepirs peiars epiars piears ipears eipars iepars paiers apiers piaers ipaers aipers iapers eaiprs aeiprs eiaprs ieaprs aieprs iaeprs praies rpaies paries apries rapies arpies priaes rpiaes piraes ipraes ripaes irpaes paires apires piares ipares aipres iapres raipes aripes riapes irapes airpes iarpes eraips reaips earips aerips raeips areips eriaps reiaps eiraps ieraps rieaps ireaps eairps aeirps eiarps iearps aierps iaerps raieps arieps riaeps iraeps aireps iareps perasi eprasi preasi rpeasi erpasi repasi pearsi eparsi paersi apersi eaprsi aeprsi praesi rpaesi paresi apresi rapesi arpesi erapsi reapsi earpsi aerpsi raepsi arepsi persai eprsai presai rpesai erpsai repsai pesrai epsrai pserai sperai esprai seprai prseai rpseai psreai spreai rspeai srpeai erspai respai esrpai serpai rsepai srepai peasri epasri paesri apesri eapsri aepsri pesari epsari pseari speari espari separi paseri apseri psaeri spaeri asperi saperi easpri aespri esapri seapri asepri saepri prasei rpasei parsei aprsei rapsei arpsei prsaei rpsaei psraei spraei rspaei srpaei pasrei apsrei psarei sparei asprei saprei raspei arspei rsapei srapei asrpei sarpei eraspi reaspi earspi aerspi raespi arespi ersapi resapi esrapi serapi rseapi sreapi easrpi aesrpi esarpi searpi aserpi saerpi rasepi arsepi rsaepi sraepi asrepi sarepi perisa eprisa preisa rpeisa erpisa repisa peirsa epirsa piersa ipersa eiprsa ieprsa priesa rpiesa piresa ipresa ripesa irpesa eripsa reipsa eirpsa ierpsa riepsa irepsa persia eprsia presia rpesia erpsia repsia pesria epsria pseria speria espria sepria prseia rpseia psreia spreia rspeia srpeia erspia respia esrpia serpia rsepia srepia peisra episra piesra ipesra eipsra iepsra pesira epsira pseira speira espira sepira pisera ipsera psiera spiera ispera sipera eispra iespra esipra seipra isepra siepra prisea rpisea pirsea iprsea ripsea irpsea prsiea rpsiea psriea spriea rspiea srpiea pisrea ipsrea psirea spirea isprea siprea rispea irspea rsipea sripea isrpea sirpea erispa reispa eirspa ierspa riespa irespa ersipa resipa esripa seripa rseipa sreipa eisrpa iesrpa esirpa seirpa iserpa sierpa risepa irsepa rsiepa sriepa isrepa sirepa peaisr epaisr paeisr apeisr eapisr aepisr peiasr epiasr pieasr ipeasr eipasr iepasr paiesr apiesr piaesr ipaesr aipesr iapesr eaipsr aeipsr eiapsr ieapsr aiepsr iaepsr peasir epasir paesir apesir eapsir aepsir pesair epsair pseair speair espair sepair paseir apseir psaeir spaeir aspeir sapeir easpir aespir esapir seapir asepir saepir peisar episar piesar ipesar eipsar iepsar pesiar epsiar pseiar speiar espiar sepiar pisear ipsear psiear spiear ispear sipear eispar iespar esipar seipar isepar siepar paiser apiser piaser ipaser aipser iapser pasier apsier psaier spaier aspier sapier pisaer ipsaer psiaer spiaer ispaer sipaer aisper iasper asiper saiper isaper siaper eaispr aeispr eiaspr ieaspr aiespr iaespr easipr aesipr esaipr seaipr aseipr saeipr eisapr iesapr esiapr seiapr iseapr sieapr aisepr iasepr asiepr saiepr isaepr siaepr praise rpaise parise aprise rapise arpise priase rpiase pirase iprase ripase irpase pairse apirse piarse iparse aiprse iaprse raipse aripse riapse irapse airpse iarpse prasie rpasie parsie aprsie rapsie arpsie prsaie rpsaie psraie spraie rspaie srpaie pasrie apsrie psarie sparie asprie saprie raspie arspie rsapie srapie asrpie sarpie prisae rpisae pirsae iprsae ripsae irpsae prsiae rpsiae psriae spriae rspiae srpiae pisrae ipsrae psirae spirae isprae siprae rispae irspae rsipae sripae isrpae sirpae paisre apisre piasre ipasre aipsre iapsre pasire apsire psaire spaire aspire sapire pisare ipsare psiare spiare ispare sipare aispre iaspre asipre saipre isapre siapre raispe arispe riaspe iraspe airspe iarspe rasipe arsipe rsaipe sraipe asripe saripe risape irsape rsiape sriape isrape sirape aisrpe iasrpe asirpe sairpe isarpe siarpe eraisp reaisp earisp aerisp raeisp areisp eriasp reiasp eirasp ierasp rieasp ireasp eairsp aeirsp eiarsp iearsp aiersp iaersp raiesp ariesp riaesp iraesp airesp iaresp erasip reasip earsip aersip raesip aresip ersaip resaip esraip seraip rseaip sreaip easrip aesrip esarip searip aserip saerip raseip arseip rsaeip sraeip asreip sareip erisap reisap eirsap iersap riesap iresap ersiap resiap esriap seriap rseiap sreiap eisrap iesrap esirap seirap iserap sierap riseap irseap rsieap srieap isreap sireap eaisrp aeisrp eiasrp ieasrp aiesrp iaesrp easirp aesirp esairp seairp aseirp saeirp eisarp iesarp esiarp seiarp isearp siearp aiserp iaserp asierp saierp isaerp siaerp raisep arisep riasep irasep airsep iarsep rasiep arsiep rsaiep sraiep asriep sariep risaep irsaep rsiaep sriaep israep siraep aisrep iasrep asirep sairep isarep siarep
Note: these 'words' (valid or invalid) are all the permutations of the word perais. These words are obtained by scrambling the letters in perais.