prexes rpexes perxes eprxes repxes erpxes prxees rpxees pxrees xprees rxpees xrpees pexres epxres pxeres xperes expres xepres rexpes erxpes rxepes xrepes exrpes xerpes preexs rpeexs perexs eprexs repexs erpexs preexs rpeexs perexs eprexs repexs erpexs peerxs eperxs peerxs eperxs eeprxs eeprxs reepxs erepxs reepxs erepxs eerpxs eerpxs prxees rpxees pxrees xprees rxpees xrpees prexes rpexes perxes eprxes repxes erpxes pxeres xperes pexres epxres xepres expres rxepes xrepes rexpes erxpes xerpes exrpes pexers epxers pxeers xpeers expers xepers peexrs epexrs peexrs epexrs eepxrs eepxrs pxeers xpeers pexers epxers xepers expers exeprs xeeprs eexprs eexprs xeeprs exeprs rexeps erxeps rxeeps xreeps exreps xereps reexps erexps reexps erexps eerxps eerxps rxeeps xreeps rexeps erxeps xereps exreps exerps xeerps eexrps eexrps xeerps exerps prexse rpexse perxse eprxse repxse erpxse prxese rpxese pxrese xprese rxpese xrpese pexrse epxrse pxerse xperse exprse xeprse rexpse erxpse rxepse xrepse exrpse xerpse presxe rpesxe persxe eprsxe repsxe erpsxe prsexe rpsexe psrexe sprexe rspexe srpexe pesrxe epsrxe pserxe sperxe esprxe seprxe respxe erspxe rsepxe srepxe esrpxe serpxe prxsee rpxsee pxrsee xprsee rxpsee xrpsee prsxee rpsxee psrxee sprxee rspxee srpxee pxsree xpsree psxree spxree xspree sxpree rxspee xrspee rsxpee srxpee xsrpee sxrpee pexsre epxsre pxesre xpesre expsre xepsre pesxre epsxre psexre spexre espxre sepxre pxsere xpsere psxere spxere xspere sxpere exspre xespre esxpre sexpre xsepre sxepre rexspe erxspe rxespe xrespe exrspe xerspe resxpe ersxpe rsexpe srexpe esrxpe serxpe rxsepe xrsepe rsxepe srxepe xsrepe sxrepe exsrpe xesrpe esxrpe sexrpe xserpe sxerpe preesx rpeesx peresx epresx repesx erpesx preesx rpeesx peresx epresx repesx erpesx peersx epersx peersx epersx eeprsx eeprsx reepsx erepsx reepsx erepsx eerpsx eerpsx presex rpesex persex eprsex repsex erpsex prseex rpseex psreex spreex rspeex srpeex pesrex epsrex pserex sperex esprex seprex respex erspex rsepex srepex esrpex serpex presex rpesex persex eprsex repsex erpsex prseex rpseex psreex spreex rspeex srpeex pesrex epsrex pserex sperex esprex seprex respex erspex rsepex srepex esrpex serpex peesrx epesrx peesrx epesrx eepsrx eepsrx peserx epserx pseerx speerx esperx seperx peserx epserx pseerx speerx esperx seperx eesprx eesprx eseprx seeprx eseprx seeprx reespx erespx reespx erespx eerspx eerspx resepx ersepx rseepx sreepx esrepx serepx resepx ersepx rseepx sreepx esrepx serepx eesrpx eesrpx eserpx seerpx eserpx seerpx prxese rpxese pxrese xprese rxpese xrpese prexse rpexse perxse eprxse repxse erpxse pxerse xperse pexrse epxrse xeprse exprse rxepse xrepse rexpse erxpse xerpse exrpse prxsee rpxsee pxrsee xprsee rxpsee xrpsee prsxee rpsxee psrxee sprxee rspxee srpxee pxsree xpsree psxree spxree xspree sxpree rxspee xrspee rsxpee srxpee xsrpee sxrpee presxe rpesxe persxe eprsxe repsxe erpsxe prsexe rpsexe psrexe sprexe rspexe srpexe pesrxe epsrxe pserxe sperxe esprxe seprxe respxe erspxe rsepxe srepxe esrpxe serpxe pxesre xpesre pexsre epxsre xepsre expsre pxsere xpsere psxere spxere xspere sxpere pesxre epsxre psexre spexre espxre sepxre xespre exspre xsepre sxepre esxpre sexpre rxespe xrespe rexspe erxspe xerspe exrspe rxsepe xrsepe rsxepe srxepe xsrepe sxrepe resxpe ersxpe rsexpe srexpe esrxpe serxpe xesrpe exsrpe xserpe sxerpe esxrpe sexrpe pexesr epxesr pxeesr xpeesr expesr xepesr peexsr epexsr peexsr epexsr eepxsr eepxsr pxeesr xpeesr pexesr epxesr xepesr expesr exepsr xeepsr eexpsr eexpsr xeepsr exepsr pexser epxser pxeser xpeser expser xepser pesxer epsxer psexer spexer espxer sepxer pxseer xpseer psxeer spxeer xspeer sxpeer exsper xesper esxper sexper xseper sxeper peesxr epesxr peesxr epesxr eepsxr eepsxr pesexr epsexr pseexr speexr espexr sepexr pesexr epsexr pseexr speexr espexr sepexr eespxr eespxr esepxr seepxr esepxr seepxr pxeser xpeser pexser epxser xepser expser pxseer xpseer psxeer spxeer xspeer sxpeer pesxer epsxer psexer spexer espxer sepxer xesper exsper xseper sxeper esxper sexper exespr xeespr eexspr eexspr xeespr exespr exsepr xesepr esxepr sexepr xseepr sxeepr eesxpr eesxpr esexpr seexpr esexpr seexpr xesepr exsepr xseepr sxeepr esxepr sexepr rexesp erxesp rxeesp xreesp exresp xeresp reexsp erexsp reexsp erexsp eerxsp eerxsp rxeesp xreesp rexesp erxesp xeresp exresp exersp xeersp eexrsp eexrsp xeersp exersp rexsep erxsep rxesep xresep exrsep xersep resxep ersxep rsexep srexep esrxep serxep rxseep xrseep rsxeep srxeep xsreep sxreep exsrep xesrep esxrep sexrep xserep sxerep reesxp eresxp reesxp eresxp eersxp eersxp resexp ersexp rseexp sreexp esrexp serexp resexp ersexp rseexp sreexp esrexp serexp eesrxp eesrxp eserxp seerxp eserxp seerxp rxesep xresep rexsep erxsep xersep exrsep rxseep xrseep rsxeep srxeep xsreep sxreep resxep ersxep rsexep srexep esrxep serxep xesrep exsrep xserep sxerep esxrep sexrep exesrp xeesrp eexsrp eexsrp xeesrp exesrp exserp xeserp esxerp sexerp xseerp sxeerp eesxrp eesxrp esexrp seexrp esexrp seexrp xeserp exserp xseerp sxeerp esxerp sexerp
Note: these 'words' (valid or invalid) are all the permutations of the word prexes. These words are obtained by scrambling the letters in prexes.