castle acstle csatle scatle asctle sactle catsle actsle ctasle tcasle atcsle tacsle cstale sctale ctsale tcsale stcale tscale astcle satcle atscle tascle stacle tsacle caslte acslte csalte scalte asclte saclte calste aclste claste lcaste alcste lacste cslate sclate clsate lcsate slcate lscate aslcte salcte alscte lascte slacte lsacte catlse actlse ctalse tcalse atclse taclse caltse acltse clatse lcatse alctse lactse ctlase tclase cltase lctase tlcase ltcase atlcse talcse altcse latcse tlacse ltacse cstlae sctlae ctslae tcslae stclae tsclae csltae scltae clstae lcstae slctae lsctae ctlsae tclsae cltsae lctsae tlcsae ltcsae stlcae tslcae sltcae lstcae tlscae ltscae astlce satlce atslce taslce stalce tsalce asltce saltce alstce lastce slatce lsatce atlsce talsce altsce latsce tlasce ltasce stlace tslace sltace lstace tlsace ltsace castel acstel csatel scatel asctel sactel catsel actsel ctasel tcasel atcsel tacsel cstael sctael ctsael tcsael stcael tscael astcel satcel atscel tascel stacel tsacel casetl acsetl csaetl scaetl ascetl sacetl caestl acestl ceastl ecastl aecstl eacstl cseatl sceatl cesatl ecsatl secatl escatl asectl saectl aesctl easctl seactl esactl catesl actesl ctaesl tcaesl atcesl tacesl caetsl acetsl ceatsl ecatsl aectsl eactsl cteasl tceasl cetasl ectasl tecasl etcasl atecsl taecsl aetcsl eatcsl teacsl etacsl csteal scteal ctseal tcseal stceal tsceal csetal scetal cestal ecstal sectal esctal ctesal tcesal cetsal ectsal tecsal etcsal stecal tsecal setcal estcal tescal etscal astecl satecl atsecl tasecl staecl tsaecl asetcl saetcl aestcl eastcl seatcl esatcl atescl taescl aetscl eatscl teascl etascl steacl tseacl setacl estacl tesacl etsacl caslet acslet csalet scalet asclet saclet calset aclset claset lcaset alcset lacset cslaet sclaet clsaet lcsaet slcaet lscaet aslcet salcet alscet lascet slacet lsacet caselt acselt csaelt scaelt ascelt sacelt caeslt aceslt ceaslt ecaslt aecslt eacslt csealt scealt cesalt ecsalt secalt escalt aseclt saeclt aesclt easclt seaclt esaclt calest aclest claest lcaest alcest lacest caelst acelst cealst ecalst aeclst eaclst cleast lceast celast eclast lecast elcast alecst laecst aelcst ealcst leacst elacst csleat scleat clseat lcseat slceat lsceat cselat scelat ceslat ecslat seclat esclat clesat lcesat celsat eclsat lecsat elcsat slecat lsecat selcat eslcat lescat elscat aslect salect alsect lasect slaect lsaect aselct saelct aeslct easlct sealct esalct alesct laesct aelsct ealsct leasct elasct sleact lseact selact eslact lesact elsact catles actles ctales tcales atcles tacles caltes acltes clates lcates alctes lactes ctlaes tclaes cltaes lctaes tlcaes ltcaes atlces talces altces latces tlaces ltaces catels actels ctaels tcaels atcels tacels caetls acetls ceatls ecatls aectls eactls cteals tceals cetals ectals tecals etcals atecls taecls aetcls eatcls teacls etacls calets aclets claets lcaets alcets lacets caelts acelts cealts ecalts aeclts eaclts cleats lceats celats eclats lecats elcats alects laects aelcts ealcts leacts elacts ctleas tcleas clteas lcteas tlceas ltceas ctelas tcelas cetlas ectlas teclas etclas cletas lcetas celtas ecltas lectas elctas tlecas ltecas telcas etlcas letcas eltcas atlecs talecs altecs latecs tlaecs ltaecs atelcs taelcs aetlcs eatlcs tealcs etalcs aletcs laetcs aeltcs ealtcs leatcs elatcs tleacs lteacs telacs etlacs letacs eltacs cstlea sctlea ctslea tcslea stclea tsclea csltea scltea clstea lcstea slctea lsctea ctlsea tclsea cltsea lctsea tlcsea ltcsea stlcea tslcea sltcea lstcea tlscea ltscea cstela sctela ctsela tcsela stcela tscela csetla scetla cestla ecstla sectla esctla ctesla tcesla cetsla ectsla tecsla etcsla stecla tsecla setcla estcla tescla etscla csleta scleta clseta lcseta slceta lsceta cselta scelta ceslta ecslta seclta esclta clesta lcesta celsta eclsta lecsta elcsta slecta lsecta selcta eslcta lescta elscta ctlesa tclesa cltesa lctesa tlcesa ltcesa ctelsa tcelsa cetlsa ectlsa teclsa etclsa cletsa lcetsa celtsa ecltsa lectsa elctsa tlecsa ltecsa telcsa etlcsa letcsa eltcsa stleca tsleca slteca lsteca tlseca ltseca stelca tselca setlca estlca teslca etslca sletca lsetca seltca esltca lestca elstca tlesca ltesca telsca etlsca letsca eltsca astlec satlec atslec taslec stalec tsalec asltec saltec alstec lastec slatec lsatec atlsec talsec altsec latsec tlasec ltasec stlaec tslaec sltaec lstaec tlsaec ltsaec astelc satelc atselc taselc staelc tsaelc asetlc saetlc aestlc eastlc seatlc esatlc ateslc taeslc aetslc eatslc teaslc etaslc stealc tsealc setalc estalc tesalc etsalc asletc saletc alsetc lasetc slaetc lsaetc aseltc saeltc aesltc easltc sealtc esaltc alestc laestc aelstc ealstc leastc elastc sleatc lseatc selatc eslatc lesatc elsatc atlesc talesc altesc latesc tlaesc ltaesc atelsc taelsc aetlsc eatlsc tealsc etalsc aletsc laetsc aeltsc ealtsc leatsc elatsc tleasc lteasc telasc etlasc letasc eltasc stleac tsleac slteac lsteac tlseac ltseac stelac tselac setlac estlac teslac etslac sletac lsetac seltac esltac lestac elstac tlesac ltesac telsac etlsac letsac eltsac
Note: these 'words' (valid or invalid) are all the permutations of the word castle. These words are obtained by scrambling the letters in castle.