echalk cehalk ehcalk hecalk chealk hcealk ecahlk ceahlk eachlk aechlk caehlk acehlk ehaclk heaclk eahclk aehclk haeclk aheclk chaelk hcaelk cahelk achelk hacelk ahcelk echlak cehlak ehclak heclak chelak hcelak eclhak celhak elchak lechak clehak lcehak ehlcak helcak elhcak lehcak hlecak lhecak chleak hcleak clheak lcheak hlceak lhceak ecalhk cealhk eaclhk aeclhk caelhk acelhk eclahk celahk elcahk lecahk cleahk lceahk ealchk aelchk elachk leachk alechk laechk calehk aclehk claehk lcaehk alcehk lacehk ehalck healck eahlck aehlck haelck ahelck ehlack helack elhack lehack hleack lheack ealhck aelhck elahck leahck alehck laehck haleck ahleck hlaeck lhaeck alheck laheck chalek hcalek cahlek achlek haclek ahclek chlaek hclaek clhaek lchaek hlcaek lhcaek calhek aclhek clahek lcahek alchek lachek halcek ahlcek hlacek lhacek alhcek lahcek echakl cehakl ehcakl hecakl cheakl hceakl ecahkl ceahkl eachkl aechkl caehkl acehkl ehackl heackl eahckl aehckl haeckl aheckl chaekl hcaekl cahekl achekl hacekl ahcekl echkal cehkal ehckal heckal chekal hcekal eckhal cekhal ekchal kechal ckehal kcehal ehkcal hekcal ekhcal kehcal hkecal khecal chkeal hckeal ckheal kcheal hkceal khceal ecakhl ceakhl eackhl aeckhl caekhl acekhl eckahl cekahl ekcahl kecahl ckeahl kceahl eakchl aekchl ekachl keachl akechl kaechl cakehl ackehl ckaehl kcaehl akcehl kacehl ehakcl heakcl eahkcl aehkcl haekcl ahekcl ehkacl hekacl ekhacl kehacl hkeacl kheacl eakhcl aekhcl ekahcl keahcl akehcl kaehcl hakecl ahkecl hkaecl khaecl akhecl kahecl chakel hcakel cahkel achkel hackel ahckel chkael hckael ckhael kchael hkcael khcael cakhel ackhel ckahel kcahel akchel kachel hakcel ahkcel hkacel khacel akhcel kahcel echlka cehlka ehclka heclka chelka hcelka eclhka celhka elchka lechka clehka lcehka ehlcka helcka elhcka lehcka hlecka lhecka chleka hcleka clheka lcheka hlceka lhceka echkla cehkla ehckla heckla chekla hcekla eckhla cekhla ekchla kechla ckehla kcehla ehkcla hekcla ekhcla kehcla hkecla khecla chkela hckela ckhela kchela hkcela khcela eclkha celkha elckha leckha clekha lcekha ecklha ceklha ekclha keclha ckelha kcelha elkcha lekcha eklcha kelcha lkecha klecha clkeha lckeha ckleha kcleha lkceha klceha ehlkca helkca elhkca lehkca hlekca lhekca ehklca heklca ekhlca kehlca hkelca khelca elkhca lekhca eklhca kelhca lkehca klehca hlkeca lhkeca hkleca khleca lkheca klheca chlkea hclkea clhkea lchkea hlckea lhckea chklea hcklea ckhlea kchlea hkclea khclea clkhea lckhea cklhea kclhea lkchea klchea hlkcea lhkcea hklcea khlcea lkhcea klhcea ecalkh cealkh eaclkh aeclkh caelkh acelkh eclakh celakh elcakh lecakh cleakh lceakh ealckh aelckh elackh leackh aleckh laeckh calekh aclekh claekh lcaekh alcekh lacekh ecaklh ceaklh eacklh aecklh caeklh aceklh eckalh cekalh ekcalh kecalh ckealh kcealh eakclh aekclh ekaclh keaclh akeclh kaeclh cakelh ackelh ckaelh kcaelh akcelh kacelh eclkah celkah elckah leckah clekah lcekah ecklah ceklah ekclah keclah ckelah kcelah elkcah lekcah eklcah kelcah lkecah klecah clkeah lckeah ckleah kcleah lkceah klceah ealkch aelkch elakch leakch alekch laekch eaklch aeklch ekalch kealch akelch kaelch elkach lekach eklach kelach lkeach kleach alkech lakech aklech kalech lkaech klaech calkeh aclkeh clakeh lcakeh alckeh lackeh cakleh ackleh ckaleh kcaleh akcleh kacleh clkaeh lckaeh cklaeh kclaeh lkcaeh klcaeh alkceh lakceh aklceh kalceh lkaceh klaceh ehalkc healkc eahlkc aehlkc haelkc ahelkc ehlakc helakc elhakc lehakc hleakc lheakc ealhkc aelhkc elahkc leahkc alehkc laehkc halekc ahlekc hlaekc lhaekc alhekc lahekc ehaklc heaklc eahklc aehklc haeklc aheklc ehkalc hekalc ekhalc kehalc hkealc khealc eakhlc aekhlc ekahlc keahlc akehlc kaehlc hakelc ahkelc hkaelc khaelc akhelc kahelc ehlkac helkac elhkac lehkac hlekac lhekac ehklac heklac ekhlac kehlac hkelac khelac elkhac lekhac eklhac kelhac lkehac klehac hlkeac lhkeac hkleac khleac lkheac klheac ealkhc aelkhc elakhc leakhc alekhc laekhc eaklhc aeklhc ekalhc kealhc akelhc kaelhc elkahc lekahc eklahc kelahc lkeahc kleahc alkehc lakehc aklehc kalehc lkaehc klaehc halkec ahlkec hlakec lhakec alhkec lahkec haklec ahklec hkalec khalec akhlec kahlec hlkaec lhkaec hklaec khlaec lkhaec klhaec alkhec lakhec aklhec kalhec lkahec klahec chalke hcalke cahlke achlke haclke ahclke chlake hclake clhake lchake hlcake lhcake calhke aclhke clahke lcahke alchke lachke halcke ahlcke hlacke lhacke alhcke lahcke chakle hcakle cahkle achkle hackle ahckle chkale hckale ckhale kchale hkcale khcale cakhle ackhle ckahle kcahle akchle kachle hakcle ahkcle hkacle khacle akhcle kahcle chlkae hclkae clhkae lchkae hlckae lhckae chklae hcklae ckhlae kchlae hkclae khclae clkhae lckhae cklhae kclhae lkchae klchae hlkcae lhkcae hklcae khlcae lkhcae klhcae calkhe aclkhe clakhe lcakhe alckhe lackhe caklhe acklhe ckalhe kcalhe akclhe kaclhe clkahe lckahe cklahe kclahe lkcahe klcahe alkche lakche aklche kalche lkache klache halkce ahlkce hlakce lhakce alhkce lahkce haklce ahklce hkalce khalce akhlce kahlce hlkace lhkace hklace khlace lkhace klhace alkhce lakhce aklhce kalhce lkahce klahce
Note: these 'words' (valid or invalid) are all the permutations of the word echalk. These words are obtained by scrambling the letters in echalk.