retack ertack rteack treack etrack terack reatck eratck raetck aretck eartck aertck rtaeck traeck rateck arteck tareck atreck etarck tearck eatrck aetrck taerck aterck retcak ertcak rtecak trecak etrcak tercak rectak erctak rcetak cretak ecrtak certak rtceak trceak rcteak crteak tcreak ctreak etcrak tecrak ectrak cetrak tcerak cterak reactk eractk raectk arectk earctk aerctk recatk ercatk rceatk creatk ecratk ceratk racetk arcetk rcaetk craetk acretk caretk eacrtk aecrtk ecartk ceartk acertk caertk rtacek tracek ratcek artcek tarcek atrcek rtcaek trcaek rctaek crtaek tcraek ctraek ractek arctek rcatek cratek acrtek cartek tacrek atcrek tcarek ctarek actrek catrek etacrk teacrk eatcrk aetcrk taecrk atecrk etcark tecark ectark cetark tceark cteark eactrk aectrk ecatrk ceatrk acetrk caetrk tacerk atcerk tcaerk ctaerk acterk caterk retakc ertakc rteakc treakc etrakc terakc reatkc eratkc raetkc aretkc eartkc aertkc rtaekc traekc ratekc artekc tarekc atrekc etarkc tearkc eatrkc aetrkc taerkc aterkc retkac ertkac rtekac trekac etrkac terkac rektac erktac rketac kretac ekrtac kertac rtkeac trkeac rkteac krteac tkreac ktreac etkrac tekrac ektrac ketrac tkerac kterac reaktc eraktc raektc arektc earktc aerktc rekatc erkatc rkeatc kreatc ekratc keratc raketc arketc rkaetc kraetc akretc karetc eakrtc aekrtc ekartc keartc akertc kaertc rtakec trakec ratkec artkec tarkec atrkec rtkaec trkaec rktaec krtaec tkraec ktraec raktec arktec rkatec kratec akrtec kartec takrec atkrec tkarec ktarec aktrec katrec etakrc teakrc eatkrc aetkrc taekrc atekrc etkarc tekarc ektarc ketarc tkearc ktearc eaktrc aektrc ekatrc keatrc aketrc kaetrc takerc atkerc tkaerc ktaerc akterc katerc retcka ertcka rtecka trecka etrcka tercka rectka erctka rcetka cretka ecrtka certka rtceka trceka rcteka crteka tcreka ctreka etcrka tecrka ectrka cetrka tcerka cterka retkca ertkca rtekca trekca etrkca terkca rektca erktca rketca kretca ekrtca kertca rtkeca trkeca rkteca krteca tkreca ktreca etkrca tekrca ektrca ketrca tkerca kterca reckta erckta rcekta crekta ecrkta cerkta rekcta erkcta rkecta krecta ekrcta kercta rcketa crketa rkceta krceta ckreta kcreta eckrta cekrta ekcrta kecrta ckerta kcerta rtckea trckea rctkea crtkea tcrkea ctrkea rtkcea trkcea rktcea krtcea tkrcea ktrcea rcktea crktea rkctea krctea ckrtea kcrtea tckrea ctkrea tkcrea ktcrea cktrea kctrea etckra teckra ectkra cetkra tcekra ctekra etkcra tekcra ektcra ketcra tkecra ktecra ecktra cektra ekctra kectra cketra kcetra tckera ctkera tkcera ktcera cktera kctera reackt erackt raeckt areckt earckt aerckt recakt ercakt rceakt creakt ecrakt cerakt racekt arcekt rcaekt craekt acrekt carekt eacrkt aecrkt ecarkt cearkt acerkt caerkt reakct erakct raekct arekct earkct aerkct rekact erkact rkeact kreact ekract keract rakect arkect rkaect kraect akrect karect eakrct aekrct ekarct kearct akerct kaerct reckat erckat rcekat crekat ecrkat cerkat rekcat erkcat rkecat krecat ekrcat kercat rckeat crkeat rkceat krceat ckreat kcreat eckrat cekrat ekcrat kecrat ckerat kcerat racket arcket rcaket craket acrket carket rakcet arkcet rkacet kracet akrcet karcet rckaet crkaet rkcaet krcaet ckraet kcraet ackret cakret akcret kacret ckaret kcaret eackrt aeckrt ecakrt ceakrt acekrt caekrt eakcrt aekcrt ekacrt keacrt akecrt kaecrt eckart cekart ekcart kecart ckeart kceart ackert cakert akcert kacert ckaert kcaert rtacke tracke ratcke artcke tarcke atrcke rtcake trcake rctake crtake tcrake ctrake ractke arctke rcatke cratke acrtke cartke tacrke atcrke tcarke ctarke actrke catrke rtakce trakce ratkce artkce tarkce atrkce rtkace trkace rktace krtace tkrace ktrace raktce arktce rkatce kratce akrtce kartce takrce atkrce tkarce ktarce aktrce katrce rtckae trckae rctkae crtkae tcrkae ctrkae rtkcae trkcae rktcae krtcae tkrcae ktrcae rcktae crktae rkctae krctae ckrtae kcrtae tckrae ctkrae tkcrae ktcrae cktrae kctrae rackte arckte rcakte crakte acrkte carkte rakcte arkcte rkacte kracte akrcte karcte rckate crkate rkcate krcate ckrate kcrate ackrte cakrte akcrte kacrte ckarte kcarte tackre atckre tcakre ctakre actkre catkre takcre atkcre tkacre ktacre aktcre katcre tckare ctkare tkcare ktcare cktare kctare acktre caktre akctre kactre ckatre kcatre etackr teackr eatckr aetckr taeckr ateckr etcakr tecakr ectakr cetakr tceakr cteakr eactkr aectkr ecatkr ceatkr acetkr caetkr tacekr atcekr tcaekr ctaekr actekr catekr etakcr teakcr eatkcr aetkcr taekcr atekcr etkacr tekacr ektacr ketacr tkeacr kteacr eaktcr aektcr ekatcr keatcr aketcr kaetcr takecr atkecr tkaecr ktaecr aktecr katecr etckar teckar ectkar cetkar tcekar ctekar etkcar tekcar ektcar ketcar tkecar ktecar ecktar cektar ekctar kectar cketar kcetar tckear ctkear tkcear ktcear cktear kctear eacktr aecktr ecaktr ceaktr acektr caektr eakctr aekctr ekactr keactr akectr kaectr eckatr cekatr ekcatr kecatr ckeatr kceatr acketr caketr akcetr kacetr ckaetr kcaetr tacker atcker tcaker ctaker actker catker takcer atkcer tkacer ktacer aktcer katcer tckaer ctkaer tkcaer ktcaer cktaer kctaer ackter cakter akcter kacter ckater kcater
Note: these 'words' (valid or invalid) are all the permutations of the word retack. These words are obtained by scrambling the letters in retack.