darken adrken draken rdaken ardken radken dakren adkren dkaren kdaren akdren kadren drkaen rdkaen dkraen kdraen rkdaen krdaen arkden rakden akrden karden rkaden kraden darekn adrekn draekn rdaekn ardekn radekn daerkn aderkn dearkn edarkn aedrkn eadrkn dreakn rdeakn derakn edrakn redakn erdakn aredkn raedkn aerdkn eardkn readkn eradkn dakern adkern dkaern kdaern akdern kadern daekrn adekrn deakrn edakrn aedkrn eadkrn dkearn kdearn dekarn edkarn kedarn ekdarn akedrn kaedrn aekdrn eakdrn keadrn ekadrn drkean rdkean dkrean kdrean rkdean krdean drekan rdekan derkan edrkan redkan erdkan dkeran kderan dekran edkran kedran ekdran rkedan kredan rekdan erkdan kerdan ekrdan arkedn rakedn akredn karedn rkaedn kraedn arekdn raekdn aerkdn earkdn reakdn erakdn akerdn kaerdn aekrdn eakrdn keardn ekardn rkeadn kreadn rekadn erkadn keradn ekradn darkne adrkne drakne rdakne ardkne radkne dakrne adkrne dkarne kdarne akdrne kadrne drkane rdkane dkrane kdrane rkdane krdane arkdne rakdne akrdne kardne rkadne kradne darnke adrnke dranke rdanke ardnke radnke danrke adnrke dnarke ndarke andrke nadrke drnake rdnake dnrake ndrake rndake nrdake arndke randke anrdke nardke rnadke nradke daknre adknre dkanre kdanre akdnre kadnre dankre adnkre dnakre ndakre andkre nadkre dknare kdnare dnkare ndkare kndare nkdare akndre kandre ankdre nakdre knadre nkadre drknae rdknae dkrnae kdrnae rkdnae krdnae drnkae rdnkae dnrkae ndrkae rndkae nrdkae dknrae kdnrae dnkrae ndkrae kndrae nkdrae rkndae krndae rnkdae nrkdae knrdae nkrdae arknde raknde akrnde karnde rkande krande arnkde rankde anrkde narkde rnakde nrakde aknrde kanrde ankrde nakrde knarde nkarde rknade krnade rnkade nrkade knrade nkrade darenk adrenk draenk rdaenk ardenk radenk daernk adernk dearnk edarnk aedrnk eadrnk dreank rdeank derank edrank redank erdank arednk raednk aerdnk eardnk readnk eradnk darnek adrnek dranek rdanek ardnek radnek danrek adnrek dnarek ndarek andrek nadrek drnaek rdnaek dnraek ndraek rndaek nrdaek arndek randek anrdek nardek rnadek nradek daenrk adenrk deanrk edanrk aednrk eadnrk danerk adnerk dnaerk ndaerk anderk naderk denark ednark dneark ndeark endark nedark aendrk eandrk anedrk naedrk enadrk neadrk drenak rdenak dernak edrnak rednak erdnak drneak rdneak dnreak ndreak rndeak nrdeak denrak ednrak dnerak nderak endrak nedrak rendak erndak rnedak nredak enrdak nerdak arendk raendk aerndk earndk reandk erandk arnedk ranedk anredk naredk rnaedk nraedk aenrdk eanrdk anerdk naerdk enardk neardk renadk ernadk rneadk nreadk enradk neradk dakenr adkenr dkaenr kdaenr akdenr kadenr daeknr adeknr deaknr edaknr aedknr eadknr dkeanr kdeanr dekanr edkanr kedanr ekdanr akednr kaednr aekdnr eakdnr keadnr ekadnr dakner adkner dkaner kdaner akdner kadner danker adnker dnaker ndaker andker nadker dknaer kdnaer dnkaer ndkaer kndaer nkdaer aknder kander ankder nakder knader nkader daenkr adenkr deankr edankr aednkr eadnkr danekr adnekr dnaekr ndaekr andekr nadekr denakr ednakr dneakr ndeakr endakr nedakr aendkr eandkr anedkr naedkr enadkr neadkr dkenar kdenar deknar edknar kednar ekdnar dknear kdnear dnkear ndkear kndear nkdear denkar ednkar dnekar ndekar endkar nedkar kendar ekndar knedar nkedar enkdar nekdar akendr kaendr aekndr eakndr keandr ekandr aknedr kanedr ankedr nakedr knaedr nkaedr aenkdr eankdr anekdr naekdr enakdr neakdr kenadr eknadr kneadr nkeadr enkadr nekadr drkena rdkena dkrena kdrena rkdena krdena drekna rdekna derkna edrkna redkna erdkna dkerna kderna dekrna edkrna kedrna ekdrna rkedna kredna rekdna erkdna kerdna ekrdna drknea rdknea dkrnea kdrnea rkdnea krdnea drnkea rdnkea dnrkea ndrkea rndkea nrdkea dknrea kdnrea dnkrea ndkrea kndrea nkdrea rkndea krndea rnkdea nrkdea knrdea nkrdea drenka rdenka dernka edrnka rednka erdnka drneka rdneka dnreka ndreka rndeka nrdeka denrka ednrka dnerka nderka endrka nedrka rendka erndka rnedka nredka enrdka nerdka dkenra kdenra deknra edknra kednra ekdnra dknera kdnera dnkera ndkera kndera nkdera denkra ednkra dnekra ndekra endkra nedkra kendra ekndra knedra nkedra enkdra nekdra rkenda krenda reknda erknda kernda ekrnda rkneda krneda rnkeda nrkeda knreda nkreda renkda ernkda rnekda nrekda enrkda nerkda kenrda eknrda knerda nkerda enkrda nekrda arkend rakend akrend karend rkaend kraend areknd raeknd aerknd earknd reaknd eraknd akernd kaernd aekrnd eakrnd kearnd ekarnd rkeand kreand rekand erkand kerand ekrand arkned rakned akrned karned rkaned kraned arnked ranked anrked narked rnaked nraked aknred kanred ankred nakred knared nkared rknaed krnaed rnkaed nrkaed knraed nkraed arenkd raenkd aernkd earnkd reankd erankd arnekd ranekd anrekd narekd rnaekd nraekd aenrkd eanrkd anerkd naerkd enarkd nearkd renakd ernakd rneakd nreakd enrakd nerakd akenrd kaenrd aeknrd eaknrd keanrd ekanrd aknerd kanerd ankerd nakerd knaerd nkaerd aenkrd eankrd anekrd naekrd enakrd neakrd kenard eknard kneard nkeard enkard nekard rkenad krenad reknad erknad kernad ekrnad rknead krnead rnkead nrkead knread nkread renkad ernkad rnekad nrekad enrkad nerkad kenrad eknrad knerad nkerad enkrad nekrad
Note: these 'words' (valid or invalid) are all the permutations of the word darken. These words are obtained by scrambling the letters in darken.