uncaps nucaps ucnaps cunaps ncuaps cnuaps unacps nuacps uancps auncps naucps anucps ucanps cuanps uacnps aucnps caunps acunps ncaups cnaups nacups ancups canups acnups uncpas nucpas ucnpas cunpas ncupas cnupas unpcas nupcas upncas puncas npucas pnucas ucpnas cupnas upcnas pucnas cpunas pcunas ncpuas cnpuas npcuas pncuas cpnuas pcnuas unapcs nuapcs uanpcs aunpcs naupcs anupcs unpacs nupacs upnacs punacs npuacs pnuacs uapncs aupncs upancs puancs apuncs pauncs napucs anpucs npaucs pnaucs apnucs panucs ucapns cuapns uacpns aucpns caupns acupns ucpans cupans upcans pucans cpuans pcuans uapcns aupcns upacns puacns apucns paucns capuns acpuns cpauns pcauns apcuns pacuns ncapus cnapus nacpus ancpus canpus acnpus ncpaus cnpaus npcaus pncaus cpnaus pcnaus napcus anpcus npacus pnacus apncus pancus capnus acpnus cpanus pcanus apcnus pacnus uncasp nucasp ucnasp cunasp ncuasp cnuasp unacsp nuacsp uancsp auncsp naucsp anucsp ucansp cuansp uacnsp aucnsp caunsp acunsp ncausp cnausp nacusp ancusp canusp acnusp uncsap nucsap ucnsap cunsap ncusap cnusap unscap nuscap usncap suncap nsucap snucap ucsnap cusnap uscnap sucnap csunap scunap ncsuap cnsuap nscuap sncuap csnuap scnuap unascp nuascp uanscp aunscp nauscp anuscp unsacp nusacp usnacp sunacp nsuacp snuacp uasncp ausncp usancp suancp asuncp sauncp nasucp ansucp nsaucp snaucp asnucp sanucp ucasnp cuasnp uacsnp aucsnp causnp acusnp ucsanp cusanp uscanp sucanp csuanp scuanp uascnp auscnp usacnp suacnp asucnp saucnp casunp acsunp csaunp scaunp ascunp sacunp ncasup cnasup nacsup ancsup cansup acnsup ncsaup cnsaup nscaup sncaup csnaup scnaup nascup anscup nsacup snacup asncup sancup casnup acsnup csanup scanup ascnup sacnup uncpsa nucpsa ucnpsa cunpsa ncupsa cnupsa unpcsa nupcsa upncsa puncsa npucsa pnucsa ucpnsa cupnsa upcnsa pucnsa cpunsa pcunsa ncpusa cnpusa npcusa pncusa cpnusa pcnusa uncspa nucspa ucnspa cunspa ncuspa cnuspa unscpa nuscpa usncpa suncpa nsucpa snucpa ucsnpa cusnpa uscnpa sucnpa csunpa scunpa ncsupa cnsupa nscupa sncupa csnupa scnupa unpsca nupsca upnsca punsca npusca pnusca unspca nuspca usnpca sunpca nsupca snupca upsnca pusnca uspnca supnca psunca spunca npsuca pnsuca nspuca snpuca psnuca spnuca ucpsna cupsna upcsna pucsna cpusna pcusna ucspna cuspna uscpna sucpna csupna scupna upscna puscna uspcna supcna psucna spucna cpsuna pcsuna cspuna scpuna pscuna spcuna ncpsua cnpsua npcsua pncsua cpnsua pcnsua ncspua cnspua nscpua sncpua csnpua scnpua npscua pnscua nspcua snpcua psncua spncua cpsnua pcsnua cspnua scpnua pscnua spcnua unapsc nuapsc uanpsc aunpsc naupsc anupsc unpasc nupasc upnasc punasc npuasc pnuasc uapnsc aupnsc upansc puansc apunsc paunsc napusc anpusc npausc pnausc apnusc panusc unaspc nuaspc uanspc aunspc nauspc anuspc unsapc nusapc usnapc sunapc nsuapc snuapc uasnpc ausnpc usanpc suanpc asunpc saunpc nasupc ansupc nsaupc snaupc asnupc sanupc unpsac nupsac upnsac punsac npusac pnusac unspac nuspac usnpac sunpac nsupac snupac upsnac pusnac uspnac supnac psunac spunac npsuac pnsuac nspuac snpuac psnuac spnuac uapsnc aupsnc upasnc puasnc apusnc pausnc uaspnc auspnc usapnc suapnc asupnc saupnc upsanc pusanc uspanc supanc psuanc spuanc apsunc pasunc aspunc sapunc psaunc spaunc napsuc anpsuc npasuc pnasuc apnsuc pansuc naspuc anspuc nsapuc snapuc asnpuc sanpuc npsauc pnsauc nspauc snpauc psnauc spnauc apsnuc pasnuc aspnuc sapnuc psanuc spanuc ucapsn cuapsn uacpsn aucpsn caupsn acupsn ucpasn cupasn upcasn pucasn cpuasn pcuasn uapcsn aupcsn upacsn puacsn apucsn paucsn capusn acpusn cpausn pcausn apcusn pacusn ucaspn cuaspn uacspn aucspn causpn acuspn ucsapn cusapn uscapn sucapn csuapn scuapn uascpn auscpn usacpn suacpn asucpn saucpn casupn acsupn csaupn scaupn ascupn sacupn ucpsan cupsan upcsan pucsan cpusan pcusan ucspan cuspan uscpan sucpan csupan scupan upscan puscan uspcan supcan psucan spucan cpsuan pcsuan cspuan scpuan pscuan spcuan uapscn aupscn upascn puascn apuscn pauscn uaspcn auspcn usapcn suapcn asupcn saupcn upsacn pusacn uspacn supacn psuacn spuacn apsucn pasucn aspucn sapucn psaucn spaucn capsun acpsun cpasun pcasun apcsun pacsun caspun acspun csapun scapun ascpun sacpun cpsaun pcsaun cspaun scpaun pscaun spcaun apscun pascun aspcun sapcun psacun spacun ncapsu cnapsu nacpsu ancpsu canpsu acnpsu ncpasu cnpasu npcasu pncasu cpnasu pcnasu napcsu anpcsu npacsu pnacsu apncsu pancsu capnsu acpnsu cpansu pcansu apcnsu pacnsu ncaspu cnaspu nacspu ancspu canspu acnspu ncsapu cnsapu nscapu sncapu csnapu scnapu nascpu anscpu nsacpu snacpu asncpu sancpu casnpu acsnpu csanpu scanpu ascnpu sacnpu ncpsau cnpsau npcsau pncsau cpnsau pcnsau ncspau cnspau nscpau sncpau csnpau scnpau npscau pnscau nspcau snpcau psncau spncau cpsnau pcsnau cspnau scpnau pscnau spcnau napscu anpscu npascu pnascu apnscu panscu naspcu anspcu nsapcu snapcu asnpcu sanpcu npsacu pnsacu nspacu snpacu psnacu spnacu apsncu pasncu aspncu sapncu psancu spancu capsnu acpsnu cpasnu pcasnu apcsnu pacsnu caspnu acspnu csapnu scapnu ascpnu sacpnu cpsanu pcsanu cspanu scpanu pscanu spcanu apscnu pascnu aspcnu sapcnu psacnu spacnu
Note: these 'words' (valid or invalid) are all the permutations of the word uncaps. These words are obtained by scrambling the letters in uncaps.