pumper upmper pmuper mpuper umpper mupper pupmer uppmer ppumer ppumer uppmer pupmer pmpuer mppuer ppmuer ppmuer mppuer pmpuer umpper mupper upmper pumper mpuper pmuper pumepr upmepr pmuepr mpuepr umpepr mupepr puempr upempr peumpr epumpr uepmpr eupmpr pmeupr mpeupr pemupr epmupr mepupr empupr umeppr mueppr uemppr eumppr meuppr emuppr pupemr uppemr ppuemr ppuemr uppemr pupemr puepmr upepmr peupmr epupmr ueppmr euppmr ppeumr ppeumr pepumr eppumr pepumr eppumr upepmr puepmr ueppmr euppmr peupmr epupmr pmpeur mppeur ppmeur ppmeur mppeur pmpeur pmepur mpepur pempur epmpur meppur emppur ppemur ppemur pepmur eppmur pepmur eppmur mpepur pmepur meppur emppur pempur epmpur umpepr mupepr upmepr pumepr mpuepr pmuepr umeppr mueppr uemppr eumppr meuppr emuppr upempr puempr uepmpr eupmpr peumpr epumpr mpeupr pmeupr mepupr empupr pemupr epmupr pumpre upmpre pmupre mpupre umppre muppre pupmre uppmre ppumre ppumre uppmre pupmre pmpure mppure ppmure ppmure mppure pmpure umppre muppre upmpre pumpre mpupre pmupre pumrpe upmrpe pmurpe mpurpe umprpe muprpe purmpe uprmpe prumpe rpumpe urpmpe rupmpe pmrupe mprupe prmupe rpmupe mrpupe rmpupe umrppe murppe urmppe rumppe mruppe rmuppe puprme upprme ppurme ppurme upprme puprme purpme uprpme prupme rpupme urppme ruppme pprume pprume prpume rppume prpume rppume uprpme purpme urppme ruppme prupme rpupme pmprue mpprue ppmrue ppmrue mpprue pmprue pmrpue mprpue prmpue rpmpue mrppue rmppue pprmue pprmue prpmue rppmue prpmue rppmue mprpue pmrpue mrppue rmppue prmpue rpmpue umprpe muprpe upmrpe pumrpe mpurpe pmurpe umrppe murppe urmppe rumppe mruppe rmuppe uprmpe purmpe urpmpe rupmpe prumpe rpumpe mprupe pmrupe mrpupe rmpupe prmupe rpmupe pumerp upmerp pmuerp mpuerp umperp muperp puemrp upemrp peumrp epumrp uepmrp eupmrp pmeurp mpeurp pemurp epmurp mepurp empurp umeprp mueprp uemprp eumprp meuprp emuprp pumrep upmrep pmurep mpurep umprep muprep purmep uprmep prumep rpumep urpmep rupmep pmruep mpruep prmuep rpmuep mrpuep rmpuep umrpep murpep urmpep rumpep mrupep rmupep puermp upermp peurmp epurmp ueprmp euprmp puremp upremp pruemp rpuemp urpemp rupemp perump eprump preump rpeump erpump repump uerpmp eurpmp urepmp ruepmp erupmp reupmp pmerup mperup pemrup epmrup meprup emprup pmreup mpreup prmeup rpmeup mrpeup rmpeup permup eprmup premup rpemup erpmup repmup merpup emrpup mrepup rmepup ermpup rempup umerpp muerpp uemrpp eumrpp meurpp emurpp umrepp murepp urmepp rumepp mruepp rmuepp uermpp eurmpp urempp ruempp erumpp reumpp merupp emrupp mreupp rmeupp ermupp remupp puperm upperm ppuerm ppuerm upperm puperm pueprm upeprm peuprm epuprm uepprm eupprm ppeurm ppeurm pepurm eppurm pepurm eppurm upeprm pueprm uepprm eupprm peuprm epuprm puprem upprem ppurem ppurem upprem puprem purpem uprpem prupem rpupem urppem ruppem ppruem ppruem prpuem rppuem prpuem rppuem uprpem purpem urppem ruppem prupem rpupem puerpm uperpm peurpm epurpm ueprpm euprpm purepm uprepm pruepm rpuepm urpepm rupepm perupm eprupm preupm rpeupm erpupm repupm uerppm eurppm ureppm rueppm eruppm reuppm pperum pperum peprum epprum peprum epprum ppreum ppreum prpeum rppeum prpeum rppeum perpum eprpum prepum rpepum erppum reppum perpum eprpum prepum rpepum erppum reppum uperpm puerpm ueprpm euprpm peurpm epurpm uprepm purepm urpepm rupepm pruepm rpuepm uerppm eurppm ureppm rueppm eruppm reuppm perupm eprupm preupm rpeupm erpupm repupm pmperu mpperu ppmeru ppmeru mpperu pmperu pmepru mpepru pempru epmpru meppru emppru ppemru ppemru pepmru eppmru pepmru eppmru mpepru pmepru meppru emppru pempru epmpru pmpreu mppreu ppmreu ppmreu mppreu pmpreu pmrpeu mprpeu prmpeu rpmpeu mrppeu rmppeu pprmeu pprmeu prpmeu rppmeu prpmeu rppmeu mprpeu pmrpeu mrppeu rmppeu prmpeu rpmpeu pmerpu mperpu pemrpu epmrpu meprpu emprpu pmrepu mprepu prmepu rpmepu mrpepu rmpepu permpu eprmpu prempu rpempu erpmpu repmpu merppu emrppu mreppu rmeppu ermppu remppu ppermu ppermu peprmu epprmu peprmu epprmu ppremu ppremu prpemu rppemu prpemu rppemu perpmu eprpmu prepmu rpepmu erppmu reppmu perpmu eprpmu prepmu rpepmu erppmu reppmu mperpu pmerpu meprpu emprpu pemrpu epmrpu mprepu pmrepu mrpepu rmpepu prmepu rpmepu merppu emrppu mreppu rmeppu ermppu remppu permpu eprmpu prempu rpempu erpmpu repmpu umperp muperp upmerp pumerp mpuerp pmuerp umeprp mueprp uemprp eumprp meuprp emuprp upemrp puemrp uepmrp eupmrp peumrp epumrp mpeurp pmeurp mepurp empurp pemurp epmurp umprep muprep upmrep pumrep mpurep pmurep umrpep murpep urmpep rumpep mrupep rmupep uprmep purmep urpmep rupmep prumep rpumep mpruep pmruep mrpuep rmpuep prmuep rpmuep umerpp muerpp uemrpp eumrpp meurpp emurpp umrepp murepp urmepp rumepp mruepp rmuepp uermpp eurmpp urempp ruempp erumpp reumpp merupp emrupp mreupp rmeupp ermupp remupp upermp puermp ueprmp euprmp peurmp epurmp upremp puremp urpemp rupemp pruemp rpuemp uerpmp eurpmp urepmp ruepmp erupmp reupmp perump eprump preump rpeump erpump repump mperup pmerup meprup emprup pemrup epmrup mpreup pmreup mrpeup rmpeup prmeup rpmeup merpup emrpup mrepup rmepup ermpup rempup permup eprmup premup rpemup erpmup repmup
Note: these 'words' (valid or invalid) are all the permutations of the word pumper. These words are obtained by scrambling the letters in pumper.