umping muping upming puming mpuing pmuing umipng muipng uimpng iumpng miupng imupng upimng puimng uipmng iupmng piumng ipumng mpiung pmiung mipung impung pimung ipmung umpnig mupnig upmnig pumnig mpunig pmunig umnpig munpig unmpig numpig mnupig nmupig upnmig punmig unpmig nupmig pnumig npumig mpnuig pmnuig mnpuig nmpuig pnmuig npmuig uminpg muinpg uimnpg iumnpg miunpg imunpg umnipg munipg unmipg numipg mnuipg nmuipg uinmpg iunmpg unimpg nuimpg inumpg niumpg minupg imnupg mniupg nmiupg inmupg nimupg upinmg puinmg uipnmg iupnmg piunmg ipunmg upnimg punimg unpimg nupimg pnuimg npuimg uinpmg iunpmg unipmg nuipmg inupmg niupmg pinumg ipnumg pniumg npiumg inpumg nipumg mpinug pminug mipnug impnug pimnug ipmnug mpniug pmniug mnpiug nmpiug pnmiug npmiug minpug imnpug mnipug nmipug inmpug nimpug pinmug ipnmug pnimug npimug inpmug nipmug umpign mupign upmign pumign mpuign pmuign umipgn muipgn uimpgn iumpgn miupgn imupgn upimgn puimgn uipmgn iupmgn piumgn ipumgn mpiugn pmiugn mipugn impugn pimugn ipmugn umpgin mupgin upmgin pumgin mpugin pmugin umgpin mugpin ugmpin gumpin mgupin gmupin upgmin pugmin ugpmin gupmin pgumin gpumin mpguin pmguin mgpuin gmpuin pgmuin gpmuin umigpn muigpn uimgpn iumgpn miugpn imugpn umgipn mugipn ugmipn gumipn mguipn gmuipn uigmpn iugmpn ugimpn guimpn igumpn giumpn migupn imgupn mgiupn gmiupn igmupn gimupn upigmn puigmn uipgmn iupgmn piugmn ipugmn upgimn pugimn ugpimn gupimn pguimn gpuimn uigpmn iugpmn ugipmn guipmn igupmn giupmn pigumn ipgumn pgiumn gpiumn igpumn gipumn mpigun pmigun mipgun impgun pimgun ipmgun mpgiun pmgiun mgpiun gmpiun pgmiun gpmiun migpun imgpun mgipun gmipun igmpun gimpun pigmun ipgmun pgimun gpimun igpmun gipmun umpngi mupngi upmngi pumngi mpungi pmungi umnpgi munpgi unmpgi numpgi mnupgi nmupgi upnmgi punmgi unpmgi nupmgi pnumgi npumgi mpnugi pmnugi mnpugi nmpugi pnmugi npmugi umpgni mupgni upmgni pumgni mpugni pmugni umgpni mugpni ugmpni gumpni mgupni gmupni upgmni pugmni ugpmni gupmni pgumni gpumni mpguni pmguni mgpuni gmpuni pgmuni gpmuni umngpi mungpi unmgpi numgpi mnugpi nmugpi umgnpi mugnpi ugmnpi gumnpi mgunpi gmunpi ungmpi nugmpi ugnmpi gunmpi ngumpi gnumpi mngupi nmgupi mgnupi gmnupi ngmupi gnmupi upngmi pungmi unpgmi nupgmi pnugmi npugmi upgnmi pugnmi ugpnmi gupnmi pgunmi gpunmi ungpmi nugpmi ugnpmi gunpmi ngupmi gnupmi pngumi npgumi pgnumi gpnumi ngpumi gnpumi mpngui pmngui mnpgui nmpgui pnmgui npmgui mpgnui pmgnui mgpnui gmpnui pgmnui gpmnui mngpui nmgpui mgnpui gmnpui ngmpui gnmpui pngmui npgmui pgnmui gpnmui ngpmui gnpmui umingp muingp uimngp iumngp miungp imungp umnigp munigp unmigp numigp mnuigp nmuigp uinmgp iunmgp unimgp nuimgp inumgp niumgp minugp imnugp mniugp nmiugp inmugp nimugp umignp muignp uimgnp iumgnp miugnp imugnp umginp muginp ugminp guminp mguinp gmuinp uigmnp iugmnp ugimnp guimnp igumnp giumnp migunp imgunp mgiunp gmiunp igmunp gimunp umngip mungip unmgip numgip mnugip nmugip umgnip mugnip ugmnip gumnip mgunip gmunip ungmip nugmip ugnmip gunmip ngumip gnumip mnguip nmguip mgnuip gmnuip ngmuip gnmuip uingmp iungmp unigmp nuigmp inugmp niugmp uignmp iugnmp uginmp guinmp igunmp giunmp ungimp nugimp ugnimp gunimp nguimp gnuimp ingump nigump ignump ginump ngiump gniump mingup imngup mnigup nmigup inmgup nimgup mignup imgnup mginup gminup igmnup gimnup mngiup nmgiup mgniup gmniup ngmiup gnmiup ingmup nigmup ignmup ginmup ngimup gnimup upingm puingm uipngm iupngm piungm ipungm upnigm punigm unpigm nupigm pnuigm npuigm uinpgm iunpgm unipgm nuipgm inupgm niupgm pinugm ipnugm pniugm npiugm inpugm nipugm upignm puignm uipgnm iupgnm piugnm ipugnm upginm puginm ugpinm gupinm pguinm gpuinm uigpnm iugpnm ugipnm guipnm igupnm giupnm pigunm ipgunm pgiunm gpiunm igpunm gipunm upngim pungim unpgim nupgim pnugim npugim upgnim pugnim ugpnim gupnim pgunim gpunim ungpim nugpim ugnpim gunpim ngupim gnupim pnguim npguim pgnuim gpnuim ngpuim gnpuim uingpm iungpm unigpm nuigpm inugpm niugpm uignpm iugnpm uginpm guinpm igunpm giunpm ungipm nugipm ugnipm gunipm nguipm gnuipm ingupm nigupm ignupm ginupm ngiupm gniupm pingum ipngum pnigum npigum inpgum nipgum pignum ipgnum pginum gpinum igpnum gipnum pngium npgium pgnium gpnium ngpium gnpium ingpum nigpum ignpum ginpum ngipum gnipum mpingu pmingu mipngu impngu pimngu ipmngu mpnigu pmnigu mnpigu nmpigu pnmigu npmigu minpgu imnpgu mnipgu nmipgu inmpgu nimpgu pinmgu ipnmgu pnimgu npimgu inpmgu nipmgu mpignu pmignu mipgnu impgnu pimgnu ipmgnu mpginu pmginu mgpinu gmpinu pgminu gpminu migpnu imgpnu mgipnu gmipnu igmpnu gimpnu pigmnu ipgmnu pgimnu gpimnu igpmnu gipmnu mpngiu pmngiu mnpgiu nmpgiu pnmgiu npmgiu mpgniu pmgniu mgpniu gmpniu pgmniu gpmniu mngpiu nmgpiu mgnpiu gmnpiu ngmpiu gnmpiu pngmiu npgmiu pgnmiu gpnmiu ngpmiu gnpmiu mingpu imngpu mnigpu nmigpu inmgpu nimgpu mignpu imgnpu mginpu gminpu igmnpu gimnpu mngipu nmgipu mgnipu gmnipu ngmipu gnmipu ingmpu nigmpu ignmpu ginmpu ngimpu gnimpu pingmu ipngmu pnigmu npigmu inpgmu nipgmu pignmu ipgnmu pginmu gpinmu igpnmu gipnmu pngimu npgimu pgnimu gpnimu ngpimu gnpimu ingpmu nigpmu ignpmu ginpmu ngipmu gnipmu
Note: these 'words' (valid or invalid) are all the permutations of the word umping. These words are obtained by scrambling the letters in umping.