dumper udmper dmuper mduper umdper mudper dupmer udpmer dpumer pdumer updmer pudmer dmpuer mdpuer dpmuer pdmuer mpduer pmduer umpder mupder upmder pumder mpuder pmuder dumepr udmepr dmuepr mduepr umdepr mudepr duempr udempr deumpr edumpr uedmpr eudmpr dmeupr mdeupr demupr edmupr medupr emdupr umedpr muedpr uemdpr eumdpr meudpr emudpr dupemr udpemr dpuemr pduemr updemr pudemr duepmr udepmr deupmr edupmr uedpmr eudpmr dpeumr pdeumr depumr edpumr pedumr epdumr upedmr puedmr uepdmr eupdmr peudmr epudmr dmpeur mdpeur dpmeur pdmeur mpdeur pmdeur dmepur mdepur dempur edmpur medpur emdpur dpemur pdemur depmur edpmur pedmur epdmur mpedur pmedur mepdur empdur pemdur epmdur umpedr mupedr upmedr pumedr mpuedr pmuedr umepdr muepdr uempdr eumpdr meupdr emupdr upemdr puemdr uepmdr eupmdr peumdr epumdr mpeudr pmeudr mepudr empudr pemudr epmudr dumpre udmpre dmupre mdupre umdpre mudpre dupmre udpmre dpumre pdumre updmre pudmre dmpure mdpure dpmure pdmure mpdure pmdure umpdre mupdre upmdre pumdre mpudre pmudre dumrpe udmrpe dmurpe mdurpe umdrpe mudrpe durmpe udrmpe drumpe rdumpe urdmpe rudmpe dmrupe mdrupe drmupe rdmupe mrdupe rmdupe umrdpe murdpe urmdpe rumdpe mrudpe rmudpe duprme udprme dpurme pdurme updrme pudrme durpme udrpme drupme rdupme urdpme rudpme dprume pdrume drpume rdpume prdume rpdume uprdme purdme urpdme rupdme prudme rpudme dmprue mdprue dpmrue pdmrue mpdrue pmdrue dmrpue mdrpue drmpue rdmpue mrdpue rmdpue dprmue pdrmue drpmue rdpmue prdmue rpdmue mprdue pmrdue mrpdue rmpdue prmdue rpmdue umprde muprde upmrde pumrde mpurde pmurde umrpde murpde urmpde rumpde mrupde rmupde uprmde purmde urpmde rupmde prumde rpumde mprude pmrude mrpude rmpude prmude rpmude dumerp udmerp dmuerp mduerp umderp muderp duemrp udemrp deumrp edumrp uedmrp eudmrp dmeurp mdeurp demurp edmurp medurp emdurp umedrp muedrp uemdrp eumdrp meudrp emudrp dumrep udmrep dmurep mdurep umdrep mudrep durmep udrmep drumep rdumep urdmep rudmep dmruep mdruep drmuep rdmuep mrduep rmduep umrdep murdep urmdep rumdep mrudep rmudep duermp udermp deurmp edurmp uedrmp eudrmp duremp udremp druemp rduemp urdemp rudemp derump edrump dreump rdeump erdump redump uerdmp eurdmp uredmp ruedmp erudmp reudmp dmerup mderup demrup edmrup medrup emdrup dmreup mdreup drmeup rdmeup mrdeup rmdeup dermup edrmup dremup rdemup erdmup redmup merdup emrdup mredup rmedup ermdup remdup umerdp muerdp uemrdp eumrdp meurdp emurdp umredp muredp urmedp rumedp mruedp rmuedp uermdp eurmdp uremdp ruemdp erumdp reumdp merudp emrudp mreudp rmeudp ermudp remudp duperm udperm dpuerm pduerm upderm puderm dueprm udeprm deuprm eduprm uedprm eudprm dpeurm pdeurm depurm edpurm pedurm epdurm upedrm puedrm uepdrm eupdrm peudrm epudrm duprem udprem dpurem pdurem updrem pudrem durpem udrpem drupem rdupem urdpem rudpem dpruem pdruem drpuem rdpuem prduem rpduem uprdem purdem urpdem rupdem prudem rpudem duerpm uderpm deurpm edurpm uedrpm eudrpm durepm udrepm druepm rduepm urdepm rudepm derupm edrupm dreupm rdeupm erdupm redupm uerdpm eurdpm uredpm ruedpm erudpm reudpm dperum pderum deprum edprum pedrum epdrum dpreum pdreum drpeum rdpeum prdeum rpdeum derpum edrpum drepum rdepum erdpum redpum perdum eprdum predum rpedum erpdum repdum uperdm puerdm ueprdm euprdm peurdm epurdm upredm puredm urpedm rupedm pruedm rpuedm uerpdm eurpdm urepdm ruepdm erupdm reupdm perudm eprudm preudm rpeudm erpudm repudm dmperu mdperu dpmeru pdmeru mpderu pmderu dmepru mdepru dempru edmpru medpru emdpru dpemru pdemru depmru edpmru pedmru epdmru mpedru pmedru mepdru empdru pemdru epmdru dmpreu mdpreu dpmreu pdmreu mpdreu pmdreu dmrpeu mdrpeu drmpeu rdmpeu mrdpeu rmdpeu dprmeu pdrmeu drpmeu rdpmeu prdmeu rpdmeu mprdeu pmrdeu mrpdeu rmpdeu prmdeu rpmdeu dmerpu mderpu demrpu edmrpu medrpu emdrpu dmrepu mdrepu drmepu rdmepu mrdepu rmdepu dermpu edrmpu drempu rdempu erdmpu redmpu merdpu emrdpu mredpu rmedpu ermdpu remdpu dpermu pdermu deprmu edprmu pedrmu epdrmu dpremu pdremu drpemu rdpemu prdemu rpdemu derpmu edrpmu drepmu rdepmu erdpmu redpmu perdmu eprdmu predmu rpedmu erpdmu repdmu mperdu pmerdu meprdu emprdu pemrdu epmrdu mpredu pmredu mrpedu rmpedu prmedu rpmedu merpdu emrpdu mrepdu rmepdu ermpdu rempdu permdu eprmdu premdu rpemdu erpmdu repmdu umperd muperd upmerd pumerd mpuerd pmuerd umeprd mueprd uemprd eumprd meuprd emuprd upemrd puemrd uepmrd eupmrd peumrd epumrd mpeurd pmeurd mepurd empurd pemurd epmurd umpred mupred upmred pumred mpured pmured umrped murped urmped rumped mruped rmuped uprmed purmed urpmed rupmed prumed rpumed mprued pmrued mrpued rmpued prmued rpmued umerpd muerpd uemrpd eumrpd meurpd emurpd umrepd murepd urmepd rumepd mruepd rmuepd uermpd eurmpd urempd ruempd erumpd reumpd merupd emrupd mreupd rmeupd ermupd remupd upermd puermd ueprmd euprmd peurmd epurmd upremd puremd urpemd rupemd pruemd rpuemd uerpmd eurpmd urepmd ruepmd erupmd reupmd perumd eprumd preumd rpeumd erpumd repumd mperud pmerud meprud emprud pemrud epmrud mpreud pmreud mrpeud rmpeud prmeud rpmeud merpud emrpud mrepud rmepud ermpud rempud permud eprmud premud rpemud erpmud repmud
Note: these 'words' (valid or invalid) are all the permutations of the word dumper. These words are obtained by scrambling the letters in dumper.