upbear pubear ubpear bupear pbuear bpuear upebar puebar uepbar eupbar peubar epubar ubepar buepar uebpar eubpar beupar ebupar pbeuar bpeuar pebuar epbuar bepuar ebpuar upbaer pubaer ubpaer bupaer pbuaer bpuaer upaber puaber uapber aupber pauber apuber ubaper buaper uabper aubper bauper abuper pbauer bpauer pabuer apbuer bapuer abpuer upeabr pueabr uepabr eupabr peuabr epuabr upaebr puaebr uapebr aupebr pauebr apuebr ueapbr euapbr uaepbr auepbr eaupbr aeupbr peaubr epaubr paeubr apeubr eapubr aepubr ubeapr bueapr uebapr eubapr beuapr ebuapr ubaepr buaepr uabepr aubepr bauepr abuepr ueabpr euabpr uaebpr auebpr eaubpr aeubpr beaupr ebaupr baeupr abeupr eabupr aebupr pbeaur bpeaur pebaur epbaur bepaur ebpaur pbaeur bpaeur pabeur apbeur bapeur abpeur peabur epabur paebur apebur eapbur aepbur beapur ebapur baepur abepur eabpur aebpur upbera pubera ubpera bupera pbuera bpuera upebra puebra uepbra eupbra peubra epubra ubepra buepra uebpra eubpra beupra ebupra pbeura bpeura pebura epbura bepura ebpura upbrea pubrea ubprea buprea pburea bpurea uprbea purbea urpbea rupbea prubea rpubea ubrpea burpea urbpea rubpea brupea rbupea pbruea bpruea prbuea rpbuea brpuea rbpuea uperba puerba ueprba euprba peurba epurba upreba pureba urpeba rupeba prueba rpueba uerpba eurpba urepba ruepba erupba reupba peruba epruba preuba rpeuba erpuba repuba uberpa buerpa uebrpa eubrpa beurpa eburpa ubrepa burepa urbepa rubepa bruepa rbuepa uerbpa eurbpa urebpa ruebpa erubpa reubpa berupa ebrupa breupa rbeupa erbupa rebupa pberua bperua pebrua epbrua beprua ebprua pbreua bpreua prbeua rpbeua brpeua rbpeua perbua eprbua prebua rpebua erpbua repbua berpua ebrpua brepua rbepua erbpua rebpua upbare pubare ubpare bupare pbuare bpuare upabre puabre uapbre aupbre paubre apubre ubapre buapre uabpre aubpre baupre abupre pbaure bpaure pabure apbure bapure abpure upbrae pubrae ubprae buprae pburae bpurae uprbae purbae urpbae rupbae prubae rpubae ubrpae burpae urbpae rubpae brupae rbupae pbruae bpruae prbuae rpbuae brpuae rbpuae uparbe puarbe uaprbe auprbe paurbe apurbe uprabe purabe urpabe rupabe pruabe rpuabe uarpbe aurpbe urapbe ruapbe arupbe raupbe parube aprube praube rpaube arpube rapube ubarpe buarpe uabrpe aubrpe baurpe aburpe ubrape burape urbape rubape bruape rbuape uarbpe aurbpe urabpe ruabpe arubpe raubpe barupe abrupe braupe rbaupe arbupe rabupe pbarue bparue pabrue apbrue baprue abprue pbraue bpraue prbaue rpbaue brpaue rbpaue parbue aprbue prabue rpabue arpbue rapbue barpue abrpue brapue rbapue arbpue rabpue upearb puearb ueparb euparb peuarb epuarb upaerb puaerb uaperb auperb pauerb apuerb ueaprb euaprb uaeprb aueprb eauprb aeuprb peaurb epaurb paeurb apeurb eapurb aepurb uperab puerab ueprab euprab peurab epurab upreab pureab urpeab rupeab prueab rpueab uerpab eurpab urepab ruepab erupab reupab peruab epruab preuab rpeuab erpuab repuab upareb puareb uapreb aupreb paureb apureb upraeb puraeb urpaeb rupaeb pruaeb rpuaeb uarpeb aurpeb urapeb ruapeb arupeb raupeb parueb aprueb praueb rpaueb arpueb rapueb uearpb euarpb uaerpb auerpb eaurpb aeurpb uerapb eurapb ureapb rueapb eruapb reuapb uarepb aurepb uraepb ruaepb aruepb rauepb earupb aerupb eraupb reaupb areupb raeupb pearub eparub paerub aperub eaprub aeprub peraub epraub preaub rpeaub erpaub repaub pareub apreub praeub rpaeub arpeub rapeub earpub aerpub erapub reapub arepub raepub ubearp buearp uebarp eubarp beuarp ebuarp ubaerp buaerp uaberp auberp bauerp abuerp ueabrp euabrp uaebrp auebrp eaubrp aeubrp beaurp ebaurp baeurp abeurp eaburp aeburp uberap buerap uebrap eubrap beurap eburap ubreap bureap urbeap rubeap brueap rbueap uerbap eurbap urebap ruebap erubap reubap beruap ebruap breuap rbeuap erbuap rebuap ubarep buarep uabrep aubrep baurep aburep ubraep buraep urbaep rubaep bruaep rbuaep uarbep aurbep urabep ruabep arubep raubep baruep abruep brauep rbauep arbuep rabuep uearbp euarbp uaerbp auerbp eaurbp aeurbp uerabp eurabp ureabp rueabp eruabp reuabp uarebp aurebp uraebp ruaebp aruebp rauebp earubp aerubp eraubp reaubp areubp raeubp bearup ebarup baerup aberup eabrup aebrup beraup ebraup breaup rbeaup erbaup rebaup bareup abreup braeup rbaeup arbeup rabeup earbup aerbup erabup reabup arebup raebup pbearu bpearu pebaru epbaru beparu ebparu pbaeru bpaeru paberu apberu baperu abperu peabru epabru paebru apebru eapbru aepbru beapru ebapru baepru abepru eabpru aebpru pberau bperau pebrau epbrau beprau ebprau pbreau bpreau prbeau rpbeau brpeau rbpeau perbau eprbau prebau rpebau erpbau repbau berpau ebrpau brepau rbepau erbpau rebpau pbareu bpareu pabreu apbreu bapreu abpreu pbraeu bpraeu prbaeu rpbaeu brpaeu rbpaeu parbeu aprbeu prabeu rpabeu arpbeu rapbeu barpeu abrpeu brapeu rbapeu arbpeu rabpeu pearbu eparbu paerbu aperbu eaprbu aeprbu perabu eprabu preabu rpeabu erpabu repabu parebu aprebu praebu rpaebu arpebu rapebu earpbu aerpbu erapbu reapbu arepbu raepbu bearpu ebarpu baerpu aberpu eabrpu aebrpu berapu ebrapu breapu rbeapu erbapu rebapu barepu abrepu braepu rbaepu arbepu rabepu earbpu aerbpu erabpu reabpu arebpu raebpu
Note: these 'words' (valid or invalid) are all the permutations of the word upbear. These words are obtained by scrambling the letters in upbear.