thecal htecal tehcal ethcal hetcal ehtcal thceal htceal tcheal ctheal hcteal chteal techal etchal tcehal ctehal ecthal cethal hectal ehctal hcetal chetal echtal cehtal theacl hteacl tehacl ethacl hetacl ehtacl thaecl htaecl tahecl athecl hatecl ahtecl teahcl etahcl taehcl atehcl eathcl aethcl heatcl ehatcl haetcl ahetcl eahtcl aehtcl thcael htcael tchael cthael hctael chtael thacel htacel tahcel athcel hatcel ahtcel tcahel ctahel tachel atchel cathel acthel hcatel chatel hactel ahctel cahtel achtel tecahl etcahl tceahl cteahl ectahl cetahl teachl etachl taechl atechl eatchl aetchl tcaehl ctaehl tacehl atcehl catehl actehl ecathl ceathl eacthl aecthl caethl acethl hecatl ehcatl hceatl cheatl echatl cehatl heactl ehactl haectl ahectl eahctl aehctl hcaetl chaetl hacetl ahcetl cahetl achetl ecahtl ceahtl eachtl aechtl caehtl acehtl thecla htecla tehcla ethcla hetcla ehtcla thcela htcela tchela cthela hctela chtela techla etchla tcehla ctehla ecthla cethla hectla ehctla hcetla chetla echtla cehtla thelca htelca tehlca ethlca hetlca ehtlca thleca htleca tlheca ltheca hlteca lhteca telhca etlhca tlehca ltehca elthca lethca heltca ehltca hletca lhetca elhtca lehtca thclea htclea tchlea cthlea hctlea chtlea thlcea htlcea tlhcea lthcea hltcea lhtcea tclhea ctlhea tlchea ltchea clthea lcthea hcltea chltea hlctea lhctea clhtea lchtea teclha etclha tcelha ctelha ectlha cetlha telcha etlcha tlecha ltecha eltcha letcha tcleha ctleha tlceha ltceha clteha lcteha ecltha celtha elctha lectha cletha lcetha heclta ehclta hcelta chelta echlta cehlta helcta ehlcta hlecta lhecta elhcta lehcta hcleta chleta hlceta lhceta clheta lcheta eclhta celhta elchta lechta clehta lcehta thealc htealc tehalc ethalc hetalc ehtalc thaelc htaelc tahelc athelc hatelc ahtelc teahlc etahlc taehlc atehlc eathlc aethlc heatlc ehatlc haetlc ahetlc eahtlc aehtlc thelac htelac tehlac ethlac hetlac ehtlac thleac htleac tlheac ltheac hlteac lhteac telhac etlhac tlehac ltehac elthac lethac heltac ehltac hletac lhetac elhtac lehtac thalec htalec tahlec athlec hatlec ahtlec thlaec htlaec tlhaec lthaec hltaec lhtaec talhec atlhec tlahec ltahec althec lathec haltec ahltec hlatec lhatec alhtec lahtec tealhc etalhc taelhc atelhc eatlhc aetlhc telahc etlahc tleahc lteahc eltahc letahc talehc atlehc tlaehc ltaehc altehc latehc ealthc aelthc elathc leathc alethc laethc healtc ehaltc haeltc aheltc eahltc aehltc helatc ehlatc hleatc lheatc elhatc lehatc haletc ahletc hlaetc lhaetc alhetc lahetc ealhtc aelhtc elahtc leahtc alehtc laehtc thcale htcale tchale cthale hctale chtale thacle htacle tahcle athcle hatcle ahtcle tcahle ctahle tachle atchle cathle acthle hcatle chatle hactle ahctle cahtle achtle thclae htclae tchlae cthlae hctlae chtlae thlcae htlcae tlhcae lthcae hltcae lhtcae tclhae ctlhae tlchae ltchae clthae lcthae hcltae chltae hlctae lhctae clhtae lchtae thalce htalce tahlce athlce hatlce ahtlce thlace htlace tlhace lthace hltace lhtace talhce atlhce tlahce ltahce althce lathce haltce ahltce hlatce lhatce alhtce lahtce tcalhe ctalhe taclhe atclhe catlhe actlhe tclahe ctlahe tlcahe ltcahe cltahe lctahe talche atlche tlache ltache altche latche calthe aclthe clathe lcathe alcthe lacthe hcalte chalte haclte ahclte cahlte achlte hclate chlate hlcate lhcate clhate lchate halcte ahlcte hlacte lhacte alhcte lahcte calhte aclhte clahte lcahte alchte lachte tecalh etcalh tcealh ctealh ectalh cetalh teaclh etaclh taeclh ateclh eatclh aetclh tcaelh ctaelh tacelh atcelh catelh actelh ecatlh ceatlh eactlh aectlh caetlh acetlh teclah etclah tcelah ctelah ectlah cetlah telcah etlcah tlecah ltecah eltcah letcah tcleah ctleah tlceah ltceah clteah lcteah ecltah celtah elctah lectah cletah lcetah tealch etalch taelch atelch eatlch aetlch telach etlach tleach lteach eltach letach talech atlech tlaech ltaech altech latech ealtch aeltch elatch leatch aletch laetch tcaleh ctaleh tacleh atcleh catleh actleh tclaeh ctlaeh tlcaeh ltcaeh cltaeh lctaeh talceh atlceh tlaceh ltaceh altceh latceh calteh aclteh clateh lcateh alcteh lacteh ecalth cealth eaclth aeclth caelth acelth eclath celath elcath lecath cleath lceath ealcth aelcth elacth leacth alecth laecth caleth acleth claeth lcaeth alceth laceth hecalt ehcalt hcealt chealt echalt cehalt heaclt ehaclt haeclt aheclt eahclt aehclt hcaelt chaelt hacelt ahcelt cahelt achelt ecahlt ceahlt eachlt aechlt caehlt acehlt heclat ehclat hcelat chelat echlat cehlat helcat ehlcat hlecat lhecat elhcat lehcat hcleat chleat hlceat lhceat clheat lcheat eclhat celhat elchat lechat clehat lcehat healct ehalct haelct ahelct eahlct aehlct helact ehlact hleact lheact elhact lehact halect ahlect hlaect lhaect alhect lahect ealhct aelhct elahct leahct alehct laehct hcalet chalet haclet ahclet cahlet achlet hclaet chlaet hlcaet lhcaet clhaet lchaet halcet ahlcet hlacet lhacet alhcet lahcet calhet aclhet clahet lcahet alchet lachet ecalht cealht eaclht aeclht caelht acelht eclaht celaht elcaht lecaht cleaht lceaht ealcht aelcht elacht leacht alecht laecht caleht acleht claeht lcaeht alceht laceht
Note: these 'words' (valid or invalid) are all the permutations of the word thecal. These words are obtained by scrambling the letters in thecal.