caulks aculks cualks ucalks auclks uaclks caluks acluks clauks lcauks alcuks lacuks culaks uclaks cluaks lcuaks ulcaks lucaks aulcks ualcks alucks laucks ulacks luacks caukls acukls cuakls ucakls auckls uackls cakuls ackuls ckauls kcauls akculs kaculs cukals uckals ckuals kcuals ukcals kucals aukcls uakcls akucls kaucls ukacls kuacls calkus aclkus clakus lcakus alckus lackus caklus acklus ckalus kcalus akclus kaclus clkaus lckaus cklaus kclaus lkcaus klcaus alkcus lakcus aklcus kalcus lkacus klacus culkas uclkas clukas lcukas ulckas luckas cuklas ucklas ckulas kculas ukclas kuclas clkuas lckuas ckluas kcluas lkcuas klcuas ulkcas lukcas uklcas kulcas lkucas klucas aulkcs ualkcs alukcs laukcs ulakcs luakcs auklcs uaklcs akulcs kaulcs ukalcs kualcs alkucs lakucs aklucs kalucs lkaucs klaucs ulkacs lukacs uklacs kulacs lkuacs kluacs caulsk aculsk cualsk ucalsk auclsk uaclsk calusk aclusk clausk lcausk alcusk lacusk culask uclask cluask lcuask ulcask lucask aulcsk ualcsk alucsk laucsk ulacsk luacsk causlk acuslk cuaslk ucaslk aucslk uacslk casulk acsulk csaulk scaulk asculk saculk cusalk ucsalk csualk scualk uscalk sucalk ausclk uasclk asuclk sauclk usaclk suaclk calsuk aclsuk clasuk lcasuk alcsuk lacsuk casluk acsluk csaluk scaluk ascluk sacluk clsauk lcsauk cslauk sclauk lscauk slcauk alscuk lascuk aslcuk salcuk lsacuk slacuk culsak uclsak clusak lcusak ulcsak lucsak cuslak ucslak csulak sculak usclak suclak clsuak lcsuak csluak scluak lscuak slcuak ulscak luscak uslcak sulcak lsucak slucak aulsck ualsck alusck lausck ulasck luasck auslck uaslck asulck saulck usalck sualck alsuck lasuck asluck saluck lsauck slauck ulsack lusack uslack sulack lsuack sluack cauksl acuksl cuaksl ucaksl aucksl uacksl cakusl ackusl ckausl kcausl akcusl kacusl cukasl uckasl ckuasl kcuasl ukcasl kucasl aukcsl uakcsl akucsl kaucsl ukacsl kuacsl causkl acuskl cuaskl ucaskl aucskl uacskl casukl acsukl csaukl scaukl ascukl sacukl cusakl ucsakl csuakl scuakl uscakl sucakl ausckl uasckl asuckl sauckl usackl suackl caksul acksul ckasul kcasul akcsul kacsul caskul acskul csakul scakul asckul sackul cksaul kcsaul cskaul sckaul kscaul skcaul akscul kascul askcul sakcul ksacul skacul cuksal ucksal ckusal kcusal ukcsal kucsal cuskal ucskal csukal scukal usckal suckal cksual kcsual cskual sckual kscual skcual ukscal kuscal uskcal sukcal ksucal skucal aukscl uakscl akuscl kauscl ukascl kuascl auskcl uaskcl asukcl saukcl usakcl suakcl aksucl kasucl askucl sakucl ksaucl skaucl uksacl kusacl uskacl sukacl ksuacl skuacl calksu aclksu claksu lcaksu alcksu lacksu caklsu acklsu ckalsu kcalsu akclsu kaclsu clkasu lckasu cklasu kclasu lkcasu klcasu alkcsu lakcsu aklcsu kalcsu lkacsu klacsu calsku aclsku clasku lcasku alcsku lacsku caslku acslku csalku scalku asclku saclku clsaku lcsaku cslaku sclaku lscaku slcaku alscku lascku aslcku salcku lsacku slacku cakslu ackslu ckaslu kcaslu akcslu kacslu casklu acsklu csaklu scaklu ascklu sacklu cksalu kcsalu cskalu sckalu kscalu skcalu aksclu kasclu askclu sakclu ksaclu skaclu clksau lcksau cklsau kclsau lkcsau klcsau clskau lcskau cslkau sclkau lsckau slckau ckslau kcslau csklau scklau ksclau skclau lkscau klscau lskcau slkcau kslcau sklcau alkscu lakscu aklscu kalscu lkascu klascu alskcu laskcu aslkcu salkcu lsakcu slakcu akslcu kaslcu asklcu saklcu ksalcu skalcu lksacu klsacu lskacu slkacu kslacu sklacu culksa uclksa cluksa lcuksa ulcksa lucksa cuklsa ucklsa ckulsa kculsa ukclsa kuclsa clkusa lckusa cklusa kclusa lkcusa klcusa ulkcsa lukcsa uklcsa kulcsa lkucsa klucsa culska uclska cluska lcuska ulcska lucska cuslka ucslka csulka sculka usclka suclka clsuka lcsuka csluka scluka lscuka slcuka ulscka luscka uslcka sulcka lsucka slucka cuksla ucksla ckusla kcusla ukcsla kucsla cuskla ucskla csukla scukla usckla suckla cksula kcsula cskula sckula kscula skcula ukscla kuscla uskcla sukcla ksucla skucla clksua lcksua cklsua kclsua lkcsua klcsua clskua lcskua cslkua sclkua lsckua slckua ckslua kcslua csklua scklua ksclua skclua lkscua klscua lskcua slkcua kslcua sklcua ulksca luksca uklsca kulsca lkusca klusca ulskca luskca uslkca sulkca lsukca slukca ukslca kuslca usklca suklca ksulca skulca lksuca klsuca lskuca slkuca ksluca skluca aulksc ualksc aluksc lauksc ulaksc luaksc auklsc uaklsc akulsc kaulsc ukalsc kualsc alkusc lakusc aklusc kalusc lkausc klausc ulkasc lukasc uklasc kulasc lkuasc kluasc aulskc ualskc aluskc lauskc ulaskc luaskc auslkc uaslkc asulkc saulkc usalkc sualkc alsukc lasukc aslukc salukc lsaukc slaukc ulsakc lusakc uslakc sulakc lsuakc sluakc aukslc uakslc akuslc kauslc ukaslc kuaslc ausklc uasklc asuklc sauklc usaklc suaklc aksulc kasulc askulc sakulc ksaulc skaulc uksalc kusalc uskalc sukalc ksualc skualc alksuc laksuc aklsuc kalsuc lkasuc klasuc alskuc laskuc aslkuc salkuc lsakuc slakuc aksluc kasluc askluc sakluc ksaluc skaluc lksauc klsauc lskauc slkauc kslauc sklauc ulksac luksac uklsac kulsac lkusac klusac ulskac luskac uslkac sulkac lsukac slukac ukslac kuslac usklac suklac ksulac skulac lksuac klsuac lskuac slkuac ksluac skluac
Note: these 'words' (valid or invalid) are all the permutations of the word caulks. These words are obtained by scrambling the letters in caulks.