sapper aspper spaper psaper apsper pasper sapper aspper spaper psaper apsper pasper sppaer pspaer sppaer pspaer ppsaer ppsaer appser papser appser papser ppaser ppaser sapepr aspepr spaepr psaepr apsepr pasepr saeppr aseppr seappr esappr aesppr easppr speapr pseapr sepapr espapr pesapr epsapr apespr paespr aepspr eapspr peaspr epaspr sapepr aspepr spaepr psaepr apsepr pasepr saeppr aseppr seappr esappr aesppr easppr speapr pseapr sepapr espapr pesapr epsapr apespr paespr aepspr eapspr peaspr epaspr sppear pspear sppear pspear ppsear ppsear spepar psepar seppar esppar pespar epspar spepar psepar seppar esppar pespar epspar ppesar ppesar pepsar eppsar pepsar eppsar appesr papesr appesr papesr ppaesr ppaesr apepsr paepsr aeppsr eappsr peapsr epapsr apepsr paepsr aeppsr eappsr peapsr epapsr ppeasr ppeasr pepasr eppasr pepasr eppasr sappre asppre spapre psapre apspre paspre sappre asppre spapre psapre apspre paspre sppare pspare sppare pspare ppsare ppsare appsre papsre appsre papsre ppasre ppasre saprpe asprpe sparpe psarpe apsrpe pasrpe sarppe asrppe srappe rsappe arsppe rasppe sprape psrape srpape rspape prsape rpsape aprspe parspe arpspe rapspe praspe rpaspe saprpe asprpe sparpe psarpe apsrpe pasrpe sarppe asrppe srappe rsappe arsppe rasppe sprape psrape srpape rspape prsape rpsape aprspe parspe arpspe rapspe praspe rpaspe spprae psprae spprae psprae ppsrae ppsrae sprpae psrpae srppae rsppae prspae rpspae sprpae psrpae srppae rsppae prspae rpspae pprsae pprsae prpsae rppsae prpsae rppsae apprse paprse apprse paprse pparse pparse aprpse parpse arppse rappse prapse rpapse aprpse parpse arppse rappse prapse rpapse pprase pprase prpase rppase prpase rppase saperp asperp spaerp psaerp apserp paserp saeprp aseprp seaprp esaprp aesprp easprp spearp psearp separp esparp pesarp epsarp apesrp paesrp aepsrp eapsrp peasrp epasrp saprep asprep sparep psarep apsrep pasrep sarpep asrpep srapep rsapep arspep raspep spraep psraep srpaep rspaep prsaep rpsaep aprsep parsep arpsep rapsep prasep rpasep saerpp aserpp searpp esarpp aesrpp easrpp sarepp asrepp sraepp rsaepp arsepp rasepp serapp esrapp sreapp rseapp ersapp resapp aerspp earspp arespp raespp eraspp reaspp sperap pserap seprap esprap pesrap epsrap spreap psreap srpeap rspeap prseap rpseap serpap esrpap srepap rsepap erspap respap persap eprsap presap rpesap erpsap repsap apersp paersp aeprsp eaprsp pearsp eparsp apresp paresp arpesp rapesp praesp rpaesp aerpsp earpsp arepsp raepsp erapsp reapsp perasp eprasp preasp rpeasp erpasp repasp saperp asperp spaerp psaerp apserp paserp saeprp aseprp seaprp esaprp aesprp easprp spearp psearp separp esparp pesarp epsarp apesrp paesrp aepsrp eapsrp peasrp epasrp saprep asprep sparep psarep apsrep pasrep sarpep asrpep srapep rsapep arspep raspep spraep psraep srpaep rspaep prsaep rpsaep aprsep parsep arpsep rapsep prasep rpasep saerpp aserpp searpp esarpp aesrpp easrpp sarepp asrepp sraepp rsaepp arsepp rasepp serapp esrapp sreapp rseapp ersapp resapp aerspp earspp arespp raespp eraspp reaspp sperap pserap seprap esprap pesrap epsrap spreap psreap srpeap rspeap prseap rpseap serpap esrpap srepap rsepap erspap respap persap eprsap presap rpesap erpsap repsap apersp paersp aeprsp eaprsp pearsp eparsp apresp paresp arpesp rapesp praesp rpaesp aerpsp earpsp arepsp raepsp erapsp reapsp perasp eprasp preasp rpeasp erpasp repasp sppera pspera sppera pspera ppsera ppsera spepra psepra seppra esppra pespra epspra spepra psepra seppra esppra pespra epspra ppesra ppesra pepsra eppsra pepsra eppsra spprea psprea spprea psprea ppsrea ppsrea sprpea psrpea srppea rsppea prspea rpspea sprpea psrpea srppea rsppea prspea rpspea pprsea pprsea prpsea rppsea prpsea rppsea sperpa pserpa seprpa esprpa pesrpa epsrpa sprepa psrepa srpepa rspepa prsepa rpsepa serppa esrppa sreppa rseppa ersppa resppa perspa eprspa prespa rpespa erpspa repspa sperpa pserpa seprpa esprpa pesrpa epsrpa sprepa psrepa srpepa rspepa prsepa rpsepa serppa esrppa sreppa rseppa ersppa resppa perspa eprspa prespa rpespa erpspa repspa ppersa ppersa peprsa epprsa peprsa epprsa ppresa ppresa prpesa rppesa prpesa rppesa perpsa eprpsa prepsa rpepsa erppsa reppsa perpsa eprpsa prepsa rpepsa erppsa reppsa appers papers appers papers ppaers ppaers apeprs paeprs aepprs eapprs peaprs epaprs apeprs paeprs aepprs eapprs peaprs epaprs ppears ppears pepars eppars pepars eppars appres papres appres papres ppares ppares aprpes parpes arppes rappes prapes rpapes aprpes parpes arppes rappes prapes rpapes ppraes ppraes prpaes rppaes prpaes rppaes aperps paerps aeprps eaprps pearps eparps apreps pareps arpeps rapeps praeps rpaeps aerpps earpps arepps raepps erapps reapps peraps epraps preaps rpeaps erpaps repaps aperps paerps aeprps eaprps pearps eparps apreps pareps arpeps rapeps praeps rpaeps aerpps earpps arepps raepps erapps reapps peraps epraps preaps rpeaps erpaps repaps pperas pperas pepras eppras pepras eppras ppreas ppreas prpeas rppeas prpeas rppeas perpas eprpas prepas rpepas erppas reppas perpas eprpas prepas rpepas erppas reppas
Note: these 'words' (valid or invalid) are all the permutations of the word sapper. These words are obtained by scrambling the letters in sapper.