lesson elsson lseson sleson eslson selson lesson elsson lseson sleson eslson selson lsseon slseon lsseon slseon ssleon ssleon esslon seslon esslon seslon sselon sselon lesosn elsosn lseosn sleosn eslosn selosn leossn elossn loessn olessn eolssn oelssn lsoesn sloesn losesn olsesn solesn oslesn esolsn seolsn eoslsn oeslsn soelsn oselsn lesosn elsosn lseosn sleosn eslosn selosn leossn elossn loessn olessn eolssn oelssn lsoesn sloesn losesn olsesn solesn oslesn esolsn seolsn eoslsn oeslsn soelsn oselsn lssoen slsoen lssoen slsoen ssloen ssloen lsosen slosen lossen olssen solsen oslsen lsosen slosen lossen olssen solsen oslsen ssolen ssolen soslen osslen soslen osslen essoln sesoln essoln sesoln sseoln sseoln esosln seosln eossln oessln soesln osesln esosln seosln eossln oessln soesln osesln ssoeln ssoeln soseln osseln soseln osseln lessno elssno lsesno slesno eslsno selsno lessno elssno lsesno slesno eslsno selsno lsseno slseno lsseno slseno ssleno ssleno esslno seslno esslno seslno sselno sselno lesnso elsnso lsenso slenso eslnso selnso lensso elnsso lnesso nlesso enlsso nelsso lsneso slneso lnseso nlseso snleso nsleso esnlso senlso enslso neslso snelso nselso lesnso elsnso lsenso slenso eslnso selnso lensso elnsso lnesso nlesso enlsso nelsso lsneso slneso lnseso nlseso snleso nsleso esnlso senlso enslso neslso snelso nselso lssneo slsneo lssneo slsneo sslneo sslneo lsnseo slnseo lnsseo nlsseo snlseo nslseo lsnseo slnseo lnsseo nlsseo snlseo nslseo ssnleo ssnleo snsleo nssleo snsleo nssleo essnlo sesnlo essnlo sesnlo ssenlo ssenlo esnslo senslo ensslo nesslo sneslo nseslo esnslo senslo ensslo nesslo sneslo nseslo ssnelo ssnelo snselo nsselo snselo nsselo lesons elsons lseons sleons eslons selons leosns elosns loesns olesns eolsns oelsns lsoens sloens losens olsens solens oslens esolns seolns eoslns oeslns soelns oselns lesnos elsnos lsenos slenos eslnos selnos lensos elnsos lnesos nlesos enlsos nelsos lsneos slneos lnseos nlseos snleos nsleos esnlos senlos enslos neslos snelos nselos leonss elonss loenss olenss eolnss oelnss lenoss elnoss lneoss nleoss enloss neloss loness olness lnoess nloess onless noless eonlss oenlss enolss neolss onelss noelss lsones slones losnes olsnes solnes oslnes lsnoes slnoes lnsoes nlsoes snloes nsloes lonses olnses lnoses nloses onlses nolses sonles osnles snoles nsoles onsles nosles esonls seonls eosnls oesnls soenls osenls esnols senols ensols nesols sneols nseols eonsls oensls enosls neosls onesls noesls sonels osnels snoels nsoels onsels nosels lesons elsons lseons sleons eslons selons leosns elosns loesns olesns eolsns oelsns lsoens sloens losens olsens solens oslens esolns seolns eoslns oeslns soelns oselns lesnos elsnos lsenos slenos eslnos selnos lensos elnsos lnesos nlesos enlsos nelsos lsneos slneos lnseos nlseos snleos nsleos esnlos senlos enslos neslos snelos nselos leonss elonss loenss olenss eolnss oelnss lenoss elnoss lneoss nleoss enloss neloss loness olness lnoess nloess onless noless eonlss oenlss enolss neolss onelss noelss lsones slones losnes olsnes solnes oslnes lsnoes slnoes lnsoes nlsoes snloes nsloes lonses olnses lnoses nloses onlses nolses sonles osnles snoles nsoles onsles nosles esonls seonls eosnls oesnls soenls osenls esnols senols ensols nesols sneols nseols eonsls oensls enosls neosls onesls noesls sonels osnels snoels nsoels onsels nosels lssone slsone lssone slsone sslone sslone lsosne slosne lossne olssne solsne oslsne lsosne slosne lossne olssne solsne oslsne ssolne ssolne soslne osslne soslne osslne lssnoe slsnoe lssnoe slsnoe sslnoe sslnoe lsnsoe slnsoe lnssoe nlssoe snlsoe nslsoe lsnsoe slnsoe lnssoe nlssoe snlsoe nslsoe ssnloe ssnloe snsloe nssloe snsloe nssloe lsonse slonse losnse olsnse solnse oslnse lsnose slnose lnsose nlsose snlose nslose lonsse olnsse lnosse nlosse onlsse nolsse sonlse osnlse snolse nsolse onslse noslse lsonse slonse losnse olsnse solnse oslnse lsnose slnose lnsose nlsose snlose nslose lonsse olnsse lnosse nlosse onlsse nolsse sonlse osnlse snolse nsolse onslse noslse ssonle ssonle sosnle ossnle sosnle ossnle ssnole ssnole snsole nssole snsole nssole sonsle osnsle snosle nsosle onssle nossle sonsle osnsle snosle nsosle onssle nossle essonl sesonl essonl sesonl sseonl sseonl esosnl seosnl eossnl oessnl soesnl osesnl esosnl seosnl eossnl oessnl soesnl osesnl ssoenl ssoenl sosenl ossenl sosenl ossenl essnol sesnol essnol sesnol ssenol ssenol esnsol sensol enssol nessol snesol nsesol esnsol sensol enssol nessol snesol nsesol ssneol ssneol snseol nsseol snseol nsseol esonsl seonsl eosnsl oesnsl soensl osensl esnosl senosl ensosl nesosl sneosl nseosl eonssl oenssl enossl neossl onessl noessl sonesl osnesl snoesl nsoesl onsesl nosesl esonsl seonsl eosnsl oesnsl soensl osensl esnosl senosl ensosl nesosl sneosl nseosl eonssl oenssl enossl neossl onessl noessl sonesl osnesl snoesl nsoesl onsesl nosesl ssonel ssonel sosnel ossnel sosnel ossnel ssnoel ssnoel snsoel nssoel snsoel nssoel sonsel osnsel snosel nsosel onssel nossel sonsel osnsel snosel nsosel onssel nossel
Note: these 'words' (valid or invalid) are all the permutations of the word lesson. These words are obtained by scrambling the letters in lesson.