upcast pucast ucpast cupast pcuast cpuast upacst puacst uapcst aupcst paucst apucst ucapst cuapst uacpst aucpst caupst acupst pcaust cpaust pacust apcust capust acpust upcsat pucsat ucpsat cupsat pcusat cpusat upscat puscat uspcat supcat psucat spucat ucspat cuspat uscpat sucpat csupat scupat pcsuat cpsuat pscuat spcuat cspuat scpuat upasct puasct uapsct aupsct pausct apusct upsact pusact uspact supact psuact spuact uaspct auspct usapct suapct asupct saupct pasuct apsuct psauct spauct aspuct sapuct ucaspt cuaspt uacspt aucspt causpt acuspt ucsapt cusapt uscapt sucapt csuapt scuapt uascpt auscpt usacpt suacpt asucpt saucpt casupt acsupt csaupt scaupt ascupt sacupt pcasut cpasut pacsut apcsut capsut acpsut pcsaut cpsaut pscaut spcaut cspaut scpaut pascut apscut psacut spacut aspcut sapcut casput acsput csaput scaput ascput sacput upcats pucats ucpats cupats pcuats cpuats upacts puacts uapcts aupcts paucts apucts ucapts cuapts uacpts aucpts caupts acupts pcauts cpauts pacuts apcuts caputs acputs upctas puctas ucptas cuptas pcutas cputas uptcas putcas utpcas tupcas ptucas tpucas uctpas cutpas utcpas tucpas ctupas tcupas pctuas cptuas ptcuas tpcuas ctpuas tcpuas upatcs puatcs uaptcs auptcs pautcs aputcs uptacs putacs utpacs tupacs ptuacs tpuacs uatpcs autpcs utapcs tuapcs atupcs taupcs patucs aptucs ptaucs tpaucs atpucs tapucs ucatps cuatps uactps auctps cautps acutps uctaps cutaps utcaps tucaps ctuaps tcuaps uatcps autcps utacps tuacps atucps taucps catups actups ctaups tcaups atcups tacups pcatus cpatus pactus apctus captus acptus pctaus cptaus ptcaus tpcaus ctpaus tcpaus patcus aptcus ptacus tpacus atpcus tapcus catpus actpus ctapus tcapus atcpus tacpus upcsta pucsta ucpsta cupsta pcusta cpusta upscta puscta uspcta supcta psucta spucta ucspta cuspta uscpta sucpta csupta scupta pcsuta cpsuta pscuta spcuta csputa scputa upctsa puctsa ucptsa cuptsa pcutsa cputsa uptcsa putcsa utpcsa tupcsa ptucsa tpucsa uctpsa cutpsa utcpsa tucpsa ctupsa tcupsa pctusa cptusa ptcusa tpcusa ctpusa tcpusa upstca pustca usptca suptca psutca sputca uptsca putsca utpsca tupsca ptusca tpusca ustpca sutpca utspca tuspca stupca tsupca pstuca sptuca ptsuca tpsuca stpuca tspuca ucstpa custpa usctpa suctpa csutpa scutpa uctspa cutspa utcspa tucspa ctuspa tcuspa ustcpa sutcpa utscpa tuscpa stucpa tsucpa cstupa sctupa ctsupa tcsupa stcupa tscupa pcstua cpstua psctua spctua csptua scptua pctsua cptsua ptcsua tpcsua ctpsua tcpsua pstcua sptcua ptscua tpscua stpcua tspcua cstpua sctpua ctspua tcspua stcpua tscpua upastc puastc uapstc aupstc paustc apustc upsatc pusatc uspatc supatc psuatc spuatc uasptc ausptc usaptc suaptc asuptc sauptc pasutc apsutc psautc spautc asputc saputc upatsc puatsc uaptsc auptsc pautsc aputsc uptasc putasc utpasc tupasc ptuasc tpuasc uatpsc autpsc utapsc tuapsc atupsc taupsc patusc aptusc ptausc tpausc atpusc tapusc upstac pustac usptac suptac psutac sputac uptsac putsac utpsac tupsac ptusac tpusac ustpac sutpac utspac tuspac stupac tsupac pstuac sptuac ptsuac tpsuac stpuac tspuac uastpc austpc usatpc suatpc asutpc sautpc uatspc autspc utaspc tuaspc atuspc tauspc ustapc sutapc utsapc tusapc stuapc tsuapc astupc satupc atsupc tasupc staupc tsaupc pastuc apstuc psatuc spatuc asptuc saptuc patsuc aptsuc ptasuc tpasuc atpsuc tapsuc pstauc sptauc ptsauc tpsauc stpauc tspauc astpuc satpuc atspuc taspuc stapuc tsapuc ucastp cuastp uacstp aucstp caustp acustp ucsatp cusatp uscatp sucatp csuatp scuatp uasctp ausctp usactp suactp asuctp sauctp casutp acsutp csautp scautp ascutp sacutp ucatsp cuatsp uactsp auctsp cautsp acutsp uctasp cutasp utcasp tucasp ctuasp tcuasp uatcsp autcsp utacsp tuacsp atucsp taucsp catusp actusp ctausp tcausp atcusp tacusp ucstap custap usctap suctap csutap scutap uctsap cutsap utcsap tucsap ctusap tcusap ustcap sutcap utscap tuscap stucap tsucap cstuap sctuap ctsuap tcsuap stcuap tscuap uastcp austcp usatcp suatcp asutcp sautcp uatscp autscp utascp tuascp atuscp tauscp ustacp sutacp utsacp tusacp stuacp tsuacp astucp satucp atsucp tasucp staucp tsaucp castup acstup csatup scatup asctup sactup catsup actsup ctasup tcasup atcsup tacsup cstaup sctaup ctsaup tcsaup stcaup tscaup astcup satcup atscup tascup stacup tsacup pcastu cpastu pacstu apcstu capstu acpstu pcsatu cpsatu pscatu spcatu cspatu scpatu pasctu apsctu psactu spactu aspctu sapctu casptu acsptu csaptu scaptu ascptu sacptu pcatsu cpatsu pactsu apctsu captsu acptsu pctasu cptasu ptcasu tpcasu ctpasu tcpasu patcsu aptcsu ptacsu tpacsu atpcsu tapcsu catpsu actpsu ctapsu tcapsu atcpsu tacpsu pcstau cpstau psctau spctau csptau scptau pctsau cptsau ptcsau tpcsau ctpsau tcpsau pstcau sptcau ptscau tpscau stpcau tspcau cstpau sctpau ctspau tcspau stcpau tscpau pastcu apstcu psatcu spatcu asptcu saptcu patscu aptscu ptascu tpascu atpscu tapscu pstacu sptacu ptsacu tpsacu stpacu tspacu astpcu satpcu atspcu taspcu stapcu tsapcu castpu acstpu csatpu scatpu asctpu sactpu catspu actspu ctaspu tcaspu atcspu tacspu cstapu sctapu ctsapu tcsapu stcapu tscapu astcpu satcpu atscpu tascpu stacpu tsacpu
Note: these 'words' (valid or invalid) are all the permutations of the word upcast. These words are obtained by scrambling the letters in upcast.