spurba psurba suprba usprba pusrba upsrba spruba psruba srpuba rspuba prsuba rpsuba surpba usrpba srupba rsupba urspba ruspba pursba uprsba prusba rpusba urpsba rupsba spubra psubra supbra uspbra pusbra upsbra spbura psbura sbpura bspura pbsura bpsura subpra usbpra sbupra bsupra ubspra buspra pubsra upbsra pbusra bpusra ubpsra bupsra sprbua psrbua srpbua rspbua prsbua rpsbua spbrua psbrua sbprua bsprua pbsrua bpsrua srbpua rsbpua sbrpua bsrpua rbspua brspua prbsua rpbsua pbrsua bprsua rbpsua brpsua surbpa usrbpa srubpa rsubpa ursbpa rusbpa subrpa usbrpa sburpa bsurpa ubsrpa busrpa srbupa rsbupa sbrupa bsrupa rbsupa brsupa urbspa rubspa ubrspa burspa rbuspa bruspa purbsa uprbsa prubsa rpubsa urpbsa rupbsa pubrsa upbrsa pbursa bpursa ubprsa buprsa prbusa rpbusa pbrusa bprusa rbpusa brpusa urbpsa rubpsa ubrpsa burpsa rbupsa brupsa spurab psurab suprab usprab pusrab upsrab spruab psruab srpuab rspuab prsuab rpsuab surpab usrpab srupab rsupab urspab ruspab pursab uprsab prusab rpusab urpsab rupsab spuarb psuarb suparb usparb pusarb upsarb spaurb psaurb sapurb aspurb pasurb apsurb suaprb usaprb sauprb asuprb uasprb ausprb puasrb upasrb pausrb apusrb uapsrb aupsrb spraub psraub srpaub rspaub prsaub rpsaub sparub psarub saprub asprub pasrub apsrub srapub rsapub sarpub asrpub raspub arspub prasub rpasub parsub aprsub rapsub arpsub surapb usrapb sruapb rsuapb ursapb rusapb suarpb usarpb saurpb asurpb uasrpb ausrpb sraupb rsaupb sarupb asrupb rasupb arsupb uraspb ruaspb uarspb aurspb rauspb aruspb purasb uprasb pruasb rpuasb urpasb rupasb puarsb uparsb paursb apursb uaprsb auprsb prausb rpausb parusb aprusb rapusb arpusb urapsb ruapsb uarpsb aurpsb raupsb arupsb spubar psubar supbar uspbar pusbar upsbar spbuar psbuar sbpuar bspuar pbsuar bpsuar subpar usbpar sbupar bsupar ubspar buspar pubsar upbsar pbusar bpusar ubpsar bupsar spuabr psuabr supabr uspabr pusabr upsabr spaubr psaubr sapubr aspubr pasubr apsubr suapbr usapbr saupbr asupbr uaspbr auspbr puasbr upasbr pausbr apusbr uapsbr aupsbr spbaur psbaur sbpaur bspaur pbsaur bpsaur spabur psabur sapbur aspbur pasbur apsbur sbapur bsapur sabpur asbpur baspur abspur pbasur bpasur pabsur apbsur bapsur abpsur subapr usbapr sbuapr bsuapr ubsapr busapr suabpr usabpr saubpr asubpr uasbpr ausbpr sbaupr bsaupr sabupr asbupr basupr absupr ubaspr buaspr uabspr aubspr bauspr abuspr pubasr upbasr pbuasr bpuasr ubpasr bupasr puabsr upabsr paubsr apubsr uapbsr aupbsr pbausr bpausr pabusr apbusr bapusr abpusr ubapsr buapsr uabpsr aubpsr baupsr abupsr sprbau psrbau srpbau rspbau prsbau rpsbau spbrau psbrau sbprau bsprau pbsrau bpsrau srbpau rsbpau sbrpau bsrpau rbspau brspau prbsau rpbsau pbrsau bprsau rbpsau brpsau sprabu psrabu srpabu rspabu prsabu rpsabu sparbu psarbu saprbu asprbu pasrbu apsrbu srapbu rsapbu sarpbu asrpbu raspbu arspbu prasbu rpasbu parsbu aprsbu rapsbu arpsbu spbaru psbaru sbparu bsparu pbsaru bpsaru spabru psabru sapbru aspbru pasbru apsbru sbapru bsapru sabpru asbpru baspru abspru pbasru bpasru pabsru apbsru bapsru abpsru srbapu rsbapu sbrapu bsrapu rbsapu brsapu srabpu rsabpu sarbpu asrbpu rasbpu arsbpu sbarpu bsarpu sabrpu asbrpu basrpu absrpu rbaspu braspu rabspu arbspu barspu abrspu prbasu rpbasu pbrasu bprasu rbpasu brpasu prabsu rpabsu parbsu aprbsu rapbsu arpbsu pbarsu bparsu pabrsu apbrsu baprsu abprsu rbapsu brapsu rabpsu arbpsu barpsu abrpsu surbap usrbap srubap rsubap ursbap rusbap subrap usbrap sburap bsurap ubsrap busrap srbuap rsbuap sbruap bsruap rbsuap brsuap urbsap rubsap ubrsap bursap rbusap brusap surabp usrabp sruabp rsuabp ursabp rusabp suarbp usarbp saurbp asurbp uasrbp ausrbp sraubp rsaubp sarubp asrubp rasubp arsubp urasbp ruasbp uarsbp aursbp rausbp arusbp subarp usbarp sbuarp bsuarp ubsarp busarp suabrp usabrp saubrp asubrp uasbrp ausbrp sbaurp bsaurp saburp asburp basurp absurp ubasrp buasrp uabsrp aubsrp bausrp abusrp srbaup rsbaup sbraup bsraup rbsaup brsaup srabup rsabup sarbup asrbup rasbup arsbup sbarup bsarup sabrup asbrup basrup absrup rbasup brasup rabsup arbsup barsup abrsup urbasp rubasp ubrasp burasp rbuasp bruasp urabsp ruabsp uarbsp aurbsp raubsp arubsp ubarsp buarsp uabrsp aubrsp baursp abursp rbausp brausp rabusp arbusp barusp abrusp purbas uprbas prubas rpubas urpbas rupbas pubras upbras pburas bpuras ubpras bupras prbuas rpbuas pbruas bpruas rbpuas brpuas urbpas rubpas ubrpas burpas rbupas brupas purabs uprabs pruabs rpuabs urpabs rupabs puarbs uparbs paurbs apurbs uaprbs auprbs praubs rpaubs parubs aprubs rapubs arpubs urapbs ruapbs uarpbs aurpbs raupbs arupbs pubars upbars pbuars bpuars ubpars bupars puabrs upabrs paubrs apubrs uapbrs aupbrs pbaurs bpaurs paburs apburs bapurs abpurs ubaprs buaprs uabprs aubprs bauprs abuprs prbaus rpbaus pbraus bpraus rbpaus brpaus prabus rpabus parbus aprbus rapbus arpbus pbarus bparus pabrus apbrus baprus abprus rbapus brapus rabpus arbpus barpus abrpus urbaps rubaps ubraps buraps rbuaps bruaps urabps ruabps uarbps aurbps raubps arubps ubarps buarps uabrps aubrps baurps aburps rbaups braups rabups arbups barups abrups
Note: these 'words' (valid or invalid) are all the permutations of the word spurba. These words are obtained by scrambling the letters in spurba.