nerkas enrkas nrekas rnekas ernkas renkas nekras enkras nkeras kneras eknras kenras nrkeas rnkeas nkreas knreas rkneas krneas erknas reknas ekrnas kernas rkenas krenas neraks enraks nreaks rneaks ernaks renaks nearks enarks naerks anerks eanrks aenrks nraeks rnaeks nareks anreks raneks arneks eranks reanks earnks aernks raenks arenks nekars enkars nkears knears eknars kenars neakrs enakrs naekrs anekrs eankrs aenkrs nkaers knaers nakers ankers kaners akners ekanrs keanrs eaknrs aeknrs kaenrs akenrs nrkaes rnkaes nkraes knraes rknaes krnaes nrakes rnakes narkes anrkes rankes arnkes nkares knares nakres ankres kanres aknres rkanes kranes raknes arknes karnes akrnes erkans rekans ekrans kerans rkeans kreans erakns reakns earkns aerkns raekns arekns ekarns kearns eakrns aekrns kaerns akerns rkaens kraens rakens arkens karens akrens nerksa enrksa nreksa rneksa ernksa renksa nekrsa enkrsa nkersa knersa eknrsa kenrsa nrkesa rnkesa nkresa knresa rknesa krnesa erknsa reknsa ekrnsa kernsa rkensa krensa nerska enrska nreska rneska ernska renska nesrka ensrka nserka snerka esnrka senrka nrseka rnseka nsreka snreka rsneka srneka ersnka resnka esrnka sernka rsenka srenka neksra enksra nkesra knesra eknsra kensra neskra enskra nsekra snekra esnkra senkra nksera knsera nskera snkera ksnera sknera eksnra kesnra esknra seknra ksenra skenra nrksea rnksea nkrsea knrsea rknsea krnsea nrskea rnskea nsrkea snrkea rsnkea srnkea nksrea knsrea nskrea snkrea ksnrea sknrea rksnea krsnea rsknea srknea ksrnea skrnea erksna reksna ekrsna kersna rkesna kresna erskna reskna esrkna serkna rsekna srekna eksrna kesrna eskrna sekrna kserna skerna rksena krsena rskena srkena ksrena skrena nerask enrask nreask rneask ernask renask nearsk enarsk naersk anersk eanrsk aenrsk nraesk rnaesk naresk anresk ranesk arnesk eransk reansk earnsk aernsk raensk arensk nersak enrsak nresak rnesak ernsak rensak nesrak ensrak nserak snerak esnrak senrak nrseak rnseak nsreak snreak rsneak srneak ersnak resnak esrnak sernak rsenak srenak neasrk enasrk naesrk anesrk eansrk aensrk nesark ensark nseark sneark esnark senark naserk anserk nsaerk snaerk asnerk sanerk easnrk aesnrk esanrk seanrk asenrk saenrk nrasek rnasek narsek anrsek ransek arnsek nrsaek rnsaek nsraek snraek rsnaek srnaek nasrek ansrek nsarek snarek asnrek sanrek rasnek arsnek rsanek sranek asrnek sarnek erasnk reasnk earsnk aersnk raesnk aresnk ersank resank esrank serank rseank sreank easrnk aesrnk esarnk searnk asernk saernk rasenk arsenk rsaenk sraenk asrenk sarenk nekasr enkasr nkeasr kneasr eknasr kenasr neaksr enaksr naeksr aneksr eanksr aenksr nkaesr knaesr nakesr ankesr kanesr aknesr ekansr keansr eaknsr aeknsr kaensr akensr neksar enksar nkesar knesar eknsar kensar neskar enskar nsekar snekar esnkar senkar nksear knsear nskear snkear ksnear sknear eksnar kesnar esknar seknar ksenar skenar neaskr enaskr naeskr aneskr eanskr aenskr nesakr ensakr nseakr sneakr esnakr senakr nasekr ansekr nsaekr snaekr asnekr sanekr easnkr aesnkr esankr seankr asenkr saenkr nkaser knaser nakser ankser kanser aknser nksaer knsaer nskaer snkaer ksnaer sknaer nasker ansker nsaker snaker asnker sanker kasner aksner ksaner skaner askner sakner ekasnr keasnr eaksnr aeksnr kaesnr akesnr eksanr kesanr eskanr sekanr kseanr skeanr easknr aesknr esaknr seaknr aseknr saeknr kasenr aksenr ksaenr skaenr askenr sakenr nrkase rnkase nkrase knrase rknase krnase nrakse rnakse narkse anrkse rankse arnkse nkarse knarse nakrse ankrse kanrse aknrse rkanse kranse raknse arknse karnse akrnse nrksae rnksae nkrsae knrsae rknsae krnsae nrskae rnskae nsrkae snrkae rsnkae srnkae nksrae knsrae nskrae snkrae ksnrae sknrae rksnae krsnae rsknae srknae ksrnae skrnae nraske rnaske narske anrske ranske arnske nrsake rnsake nsrake snrake rsnake srnake nasrke ansrke nsarke snarke asnrke sanrke rasnke arsnke rsanke sranke asrnke sarnke nkasre knasre naksre anksre kansre aknsre nksare knsare nskare snkare ksnare sknare naskre anskre nsakre snakre asnkre sankre kasnre aksnre ksanre skanre asknre saknre rkasne krasne raksne arksne karsne akrsne rksane krsane rskane srkane ksrane skrane raskne arskne rsakne srakne asrkne sarkne kasrne aksrne ksarne skarne askrne sakrne erkasn rekasn ekrasn kerasn rkeasn kreasn eraksn reaksn earksn aerksn raeksn areksn ekarsn kearsn eakrsn aekrsn kaersn akersn rkaesn kraesn rakesn arkesn karesn akresn erksan reksan ekrsan kersan rkesan kresan erskan reskan esrkan serkan rsekan srekan eksran kesran eskran sekran kseran skeran rksean krsean rskean srkean ksrean skrean eraskn reaskn earskn aerskn raeskn areskn ersakn resakn esrakn serakn rseakn sreakn easrkn aesrkn esarkn searkn aserkn saerkn rasekn arsekn rsaekn sraekn asrekn sarekn ekasrn keasrn eaksrn aeksrn kaesrn akesrn eksarn kesarn eskarn sekarn ksearn skearn easkrn aeskrn esakrn seakrn asekrn saekrn kasern aksern ksaern skaern askern sakern rkasen krasen raksen arksen karsen akrsen rksaen krsaen rskaen srkaen ksraen skraen rasken arsken rsaken sraken asrken sarken kasren aksren ksaren skaren askren sakren
Note: these 'words' (valid or invalid) are all the permutations of the word nerkas. These words are obtained by scrambling the letters in nerkas.