sperre pserre seprre esprre pesrre epsrre sprere psrere srpere rspere prsere rpsere serpre esrpre srepre rsepre erspre respre persre eprsre presre rpesre erpsre repsre sperre pserre seprre esprre pesrre epsrre sprere psrere srpere rspere prsere rpsere serpre esrpre srepre rsepre erspre respre persre eprsre presre rpesre erpsre repsre sprree psrree srpree rspree prsree rpsree sprree psrree srpree rspree prsree rpsree srrpee rsrpee srrpee rsrpee rrspee rrspee prrsee rprsee prrsee rprsee rrpsee rrpsee serrpe esrrpe srerpe rserpe ersrpe resrpe serrpe esrrpe srerpe rserpe ersrpe resrpe srrepe rsrepe srrepe rsrepe rrsepe rrsepe errspe rerspe errspe rerspe rrespe rrespe perrse eprrse prerse rperse erprse reprse perrse eprrse prerse rperse erprse reprse prrese rprese prrese rprese rrpese rrpese errpse rerpse errpse rerpse rrepse rrepse sperer pserer seprer esprer pesrer epsrer spreer psreer srpeer rspeer prseer rpseer serper esrper sreper rseper ersper resper perser eprser preser rpeser erpser repser speerr pseerr seperr esperr peserr epserr speerr pseerr seperr esperr peserr epserr seeprr eseprr seeprr eseprr eesprr eesprr peesrr epesrr peesrr epesrr eepsrr eepsrr spreer psreer srpeer rspeer prseer rpseer sperer pserer seprer esprer pesrer epsrer sreper rseper serper esrper resper ersper preser rpeser perser eprser repser erpser serepr esrepr sreepr rseepr ersepr resepr seerpr eserpr seerpr eserpr eesrpr eesrpr sreepr rseepr serepr esrepr resepr ersepr erespr reespr eerspr eerspr reespr erespr peresr epresr preesr rpeesr erpesr repesr peersr epersr peersr epersr eeprsr eeprsr preesr rpeesr peresr epresr repesr erpesr erepsr reepsr eerpsr eerpsr reepsr erepsr sperer pserer seprer esprer pesrer epsrer spreer psreer srpeer rspeer prseer rpseer serper esrper sreper rseper ersper resper perser eprser preser rpeser erpser repser speerr pseerr seperr esperr peserr epserr speerr pseerr seperr esperr peserr epserr seeprr eseprr seeprr eseprr eesprr eesprr peesrr epesrr peesrr epesrr eepsrr eepsrr spreer psreer srpeer rspeer prseer rpseer sperer pserer seprer esprer pesrer epsrer sreper rseper serper esrper resper ersper preser rpeser perser eprser repser erpser serepr esrepr sreepr rseepr ersepr resepr seerpr eserpr seerpr eserpr eesrpr eesrpr sreepr rseepr serepr esrepr resepr ersepr erespr reespr eerspr eerspr reespr erespr peresr epresr preesr rpeesr erpesr repesr peersr epersr peersr epersr eeprsr eeprsr preesr rpeesr peresr epresr repesr erpesr erepsr reepsr eerpsr eerpsr reepsr erepsr sprree psrree srpree rspree prsree rpsree sprree psrree srpree rspree prsree rpsree srrpee rsrpee srrpee rsrpee rrspee rrspee prrsee rprsee prrsee rprsee rrpsee rrpsee sprere psrere srpere rspere prsere rpsere sperre pserre seprre esprre pesrre epsrre srepre rsepre serpre esrpre respre erspre presre rpesre persre eprsre repsre erpsre sprere psrere srpere rspere prsere rpsere sperre pserre seprre esprre pesrre epsrre srepre rsepre serpre esrpre respre erspre presre rpesre persre eprsre repsre erpsre srrepe rsrepe srrepe rsrepe rrsepe rrsepe srerpe rserpe serrpe esrrpe resrpe ersrpe srerpe rserpe serrpe esrrpe resrpe ersrpe rrespe rrespe rerspe errspe rerspe errspe prrese rprese prrese rprese rrpese rrpese prerse rperse perrse eprrse reprse erprse prerse rperse perrse eprrse reprse erprse rrepse rrepse rerpse errpse rerpse errpse serrep esrrep srerep rserep ersrep resrep serrep esrrep srerep rserep ersrep resrep srreep rsreep srreep rsreep rrseep rrseep errsep rersep errsep rersep rresep rresep sererp esrerp sreerp rseerp erserp reserp seerrp eserrp seerrp eserrp eesrrp eesrrp sreerp rseerp sererp esrerp reserp erserp eresrp reesrp eersrp eersrp reesrp eresrp sererp esrerp sreerp rseerp erserp reserp seerrp eserrp seerrp eserrp eesrrp eesrrp sreerp rseerp sererp esrerp reserp erserp eresrp reesrp eersrp eersrp reesrp eresrp srreep rsreep srreep rsreep rrseep rrseep srerep rserep serrep esrrep resrep ersrep srerep rserep serrep esrrep resrep ersrep rresep rresep rersep errsep rersep errsep erresp reresp erresp reresp rreesp rreesp erersp reersp eerrsp eerrsp reersp erersp erersp reersp eerrsp eerrsp reersp erersp rreesp rreesp reresp erresp reresp erresp perres eprres preres rperes erpres repres perres eprres preres rperes erpres repres prrees rprees prrees rprees rrpees rrpees errpes rerpes errpes rerpes rrepes rrepes perers eprers preers rpeers erpers repers peerrs eperrs peerrs eperrs eeprrs eeprrs preers rpeers perers eprers repers erpers ereprs reeprs eerprs eerprs reeprs ereprs perers eprers preers rpeers erpers repers peerrs eperrs peerrs eperrs eeprrs eeprrs preers rpeers perers eprers repers erpers ereprs reeprs eerprs eerprs reeprs ereprs prrees rprees prrees rprees rrpees rrpees preres rperes perres eprres repres erpres preres rperes perres eprres repres erpres rrepes rrepes rerpes errpes rerpes errpes erreps rereps erreps rereps rreeps rreeps ererps reerps eerrps eerrps reerps ererps ererps reerps eerrps eerrps reerps ererps rreeps rreeps rereps erreps rereps erreps
Note: these 'words' (valid or invalid) are all the permutations of the word sperre. These words are obtained by scrambling the letters in sperre.