sarsen asrsen srasen rsasen arssen rassen sasren assren ssaren ssaren assren sasren srsaen rssaen ssraen ssraen rssaen srsaen arssen rassen asrsen sarsen rsasen srasen saresn asresn sraesn rsaesn arsesn rasesn saersn asersn searsn esarsn aesrsn easrsn sreasn rseasn serasn esrasn resasn ersasn aressn raessn aerssn earssn reassn erassn sasern assern ssaern ssaern assern sasern saesrn asesrn seasrn esasrn aessrn eassrn ssearn ssearn sesarn essarn sesarn essarn asesrn saesrn aessrn eassrn seasrn esasrn srsean rssean ssrean ssrean rssean srsean sresan rsesan sersan esrsan ressan erssan sseran sseran sesran essran sesran essran rsesan sresan ressan erssan sersan esrsan arsesn rasesn asresn saresn rsaesn sraesn aressn raessn aerssn earssn reassn erassn asersn saersn aesrsn easrsn searsn esarsn rseasn sreasn resasn ersasn serasn esrasn sarsne asrsne srasne rsasne arssne rassne sasrne assrne ssarne ssarne assrne sasrne srsane rssane ssrane ssrane rssane srsane arssne rassne asrsne sarsne rsasne srasne sarnse asrnse sranse rsanse arsnse rasnse sanrse asnrse snarse nsarse ansrse nasrse srnase rsnase snrase nsrase rnsase nrsase arnsse ransse anrsse narsse rnasse nrasse sasnre assnre ssanre ssanre assnre sasnre sansre asnsre snasre nsasre anssre nassre ssnare ssnare snsare nssare snsare nssare asnsre sansre anssre nassre snasre nsasre srsnae rssnae ssrnae ssrnae rssnae srsnae srnsae rsnsae snrsae nsrsae rnssae nrssae ssnrae ssnrae snsrae nssrae snsrae nssrae rsnsae srnsae rnssae nrssae snrsae nsrsae arsnse rasnse asrnse sarnse rsanse sranse arnsse ransse anrsse narsse rnasse nrasse asnrse sanrse ansrse nasrse snarse nsarse rsnase srnase rnsase nrsase snrase nsrase sarens asrens sraens rsaens arsens rasens saerns aserns searns esarns aesrns easrns sreans rseans serans esrans resans ersans aresns raesns aersns earsns reasns erasns sarnes asrnes sranes rsanes arsnes rasnes sanres asnres snares nsares ansres nasres srnaes rsnaes snraes nsraes rnsaes nrsaes arnses ranses anrses narses rnases nrases saenrs asenrs seanrs esanrs aesnrs easnrs saners asners snaers nsaers ansers nasers senars esnars snears nsears ensars nesars aensrs eansrs anesrs naesrs enasrs neasrs srenas rsenas sernas esrnas resnas ersnas srneas rsneas snreas nsreas rnseas nrseas senras esnras sneras nseras ensras nesras rensas ernsas rnesas nresas enrsas nersas arenss raenss aernss earnss reanss eranss arness raness anress naress rnaess nraess aenrss eanrss anerss naerss enarss nearss renass ernass rneass nreass enrass nerass sasenr assenr ssaenr ssaenr assenr sasenr saesnr asesnr seasnr esasnr aessnr eassnr sseanr sseanr sesanr essanr sesanr essanr asesnr saesnr aessnr eassnr seasnr esasnr sasner assner ssaner ssaner assner sasner sanser asnser snaser nsaser ansser nasser ssnaer ssnaer snsaer nssaer snsaer nssaer asnser sanser ansser nasser snaser nsaser saensr asensr seansr esansr aesnsr easnsr sanesr asnesr snaesr nsaesr ansesr nasesr senasr esnasr sneasr nseasr ensasr nesasr aenssr eanssr anessr naessr enassr neassr ssenar ssenar sesnar essnar sesnar essnar ssnear ssnear snsear nssear snsear nssear sensar esnsar snesar nsesar enssar nessar sensar esnsar snesar nsesar enssar nessar asensr saensr aesnsr easnsr seansr esansr asnesr sanesr ansesr nasesr snaesr nsaesr aenssr eanssr anessr naessr enassr neassr senasr esnasr sneasr nseasr ensasr nesasr srsena rssena ssrena ssrena rssena srsena sresna rsesna sersna esrsna ressna erssna sserna sserna sesrna essrna sesrna essrna rsesna sresna ressna erssna sersna esrsna srsnea rssnea ssrnea ssrnea rssnea srsnea srnsea rsnsea snrsea nsrsea rnssea nrssea ssnrea ssnrea snsrea nssrea snsrea nssrea rsnsea srnsea rnssea nrssea snrsea nsrsea srensa rsensa sernsa esrnsa resnsa ersnsa srnesa rsnesa snresa nsresa rnsesa nrsesa senrsa esnrsa snersa nsersa ensrsa nesrsa renssa ernssa rnessa nressa enrssa nerssa ssenra ssenra sesnra essnra sesnra essnra ssnera ssnera snsera nssera snsera nssera sensra esnsra snesra nsesra enssra nessra sensra esnsra snesra nsesra enssra nessra rsensa srensa resnsa ersnsa sernsa esrnsa rsnesa srnesa rnsesa nrsesa snresa nsresa renssa ernssa rnessa nressa enrssa nerssa senrsa esnrsa snersa nsersa ensrsa nesrsa arsens rasens asrens sarens rsaens sraens aresns raesns aersns earsns reasns erasns aserns saerns aesrns easrns searns esarns rseans sreans resans ersans serans esrans arsnes rasnes asrnes sarnes rsanes sranes arnses ranses anrses narses rnases nrases asnres sanres ansres nasres snares nsares rsnaes srnaes rnsaes nrsaes snraes nsraes arenss raenss aernss earnss reanss eranss arness raness anress naress rnaess nraess aenrss eanrss anerss naerss enarss nearss renass ernass rneass nreass enrass nerass asenrs saenrs aesnrs easnrs seanrs esanrs asners saners ansers nasers snaers nsaers aensrs eansrs anesrs naesrs enasrs neasrs senars esnars snears nsears ensars nesars rsenas srenas resnas ersnas sernas esrnas rsneas srneas rnseas nrseas snreas nsreas rensas ernsas rnesas nresas enrsas nersas senras esnras sneras nseras ensras nesras
Note: these 'words' (valid or invalid) are all the permutations of the word sarsen. These words are obtained by scrambling the letters in sarsen.