strewn tsrewn srtewn rstewn trsewn rtsewn sterwn tserwn setrwn estrwn tesrwn etsrwn sretwn rsetwn sertwn esrtwn restwn erstwn treswn rteswn terswn etrswn retswn ertswn strwen tsrwen srtwen rstwen trswen rtswen stwren tswren swtren wstren twsren wtsren srwten rswten swrten wsrten rwsten wrsten trwsen rtwsen twrsen wtrsen rwtsen wrtsen stewrn tsewrn setwrn estwrn teswrn etswrn stwern tswern swtern wstern twsern wtsern sewtrn eswtrn swetrn wsetrn ewstrn westrn tewsrn etwsrn twesrn wtesrn ewtsrn wetsrn srewtn rsewtn serwtn esrwtn reswtn erswtn srwetn rswetn swretn wsretn rwsetn wrsetn sewrtn eswrtn swertn wsertn ewsrtn wesrtn rewstn erwstn rwestn wrestn ewrstn werstn trewsn rtewsn terwsn etrwsn retwsn ertwsn trwesn rtwesn twresn wtresn rwtesn wrtesn tewrsn etwrsn twersn wtersn ewtrsn wetrsn rewtsn erwtsn rwetsn wretsn ewrtsn wertsn strenw tsrenw srtenw rstenw trsenw rtsenw sternw tsernw setrnw estrnw tesrnw etsrnw sretnw rsetnw sertnw esrtnw restnw erstnw tresnw rtesnw tersnw etrsnw retsnw ertsnw strnew tsrnew srtnew rstnew trsnew rtsnew stnrew tsnrew sntrew nstrew tnsrew ntsrew srntew rsntew snrtew nsrtew rnstew nrstew trnsew rtnsew tnrsew ntrsew rntsew nrtsew stenrw tsenrw setnrw estnrw tesnrw etsnrw stnerw tsnerw snterw nsterw tnserw ntserw sentrw esntrw snetrw nsetrw enstrw nestrw tensrw etnsrw tnesrw ntesrw entsrw netsrw srentw rsentw serntw esrntw resntw ersntw srnetw rsnetw snretw nsretw rnsetw nrsetw senrtw esnrtw snertw nsertw ensrtw nesrtw renstw ernstw rnestw nrestw enrstw nerstw trensw rtensw ternsw etrnsw retnsw ertnsw trnesw rtnesw tnresw ntresw rntesw nrtesw tenrsw etnrsw tnersw ntersw entrsw netrsw rentsw erntsw rnetsw nretsw enrtsw nertsw strwne tsrwne srtwne rstwne trswne rtswne stwrne tswrne swtrne wstrne twsrne wtsrne srwtne rswtne swrtne wsrtne rwstne wrstne trwsne rtwsne twrsne wtrsne rwtsne wrtsne strnwe tsrnwe srtnwe rstnwe trsnwe rtsnwe stnrwe tsnrwe sntrwe nstrwe tnsrwe ntsrwe srntwe rsntwe snrtwe nsrtwe rnstwe nrstwe trnswe rtnswe tnrswe ntrswe rntswe nrtswe stwnre tswnre swtnre wstnre twsnre wtsnre stnwre tsnwre sntwre nstwre tnswre ntswre swntre wsntre snwtre nswtre wnstre nwstre twnsre wtnsre tnwsre ntwsre wntsre nwtsre srwnte rswnte swrnte wsrnte rwsnte wrsnte srnwte rsnwte snrwte nsrwte rnswte nrswte swnrte wsnrte snwrte nswrte wnsrte nwsrte rwnste wrnste rnwste nrwste wnrste nwrste trwnse rtwnse twrnse wtrnse rwtnse wrtnse trnwse rtnwse tnrwse ntrwse rntwse nrtwse twnrse wtnrse tnwrse ntwrse wntrse nwtrse rwntse wrntse rnwtse nrwtse wnrtse nwrtse stewnr tsewnr setwnr estwnr teswnr etswnr stwenr tswenr swtenr wstenr twsenr wtsenr sewtnr eswtnr swetnr wsetnr ewstnr westnr tewsnr etwsnr twesnr wtesnr ewtsnr wetsnr stenwr tsenwr setnwr estnwr tesnwr etsnwr stnewr tsnewr sntewr nstewr tnsewr ntsewr sentwr esntwr snetwr nsetwr enstwr nestwr tenswr etnswr tneswr nteswr entswr netswr stwner tswner swtner wstner twsner wtsner stnwer tsnwer sntwer nstwer tnswer ntswer swnter wsnter snwter nswter wnster nwster twnser wtnser tnwser ntwser wntser nwtser sewntr eswntr swentr wsentr ewsntr wesntr senwtr esnwtr snewtr nsewtr enswtr neswtr swnetr wsnetr snwetr nswetr wnsetr nwsetr ewnstr wenstr enwstr newstr wnestr nwestr tewnsr etwnsr twensr wtensr ewtnsr wetnsr tenwsr etnwsr tnewsr ntewsr entwsr netwsr twnesr wtnesr tnwesr ntwesr wntesr nwtesr ewntsr wentsr enwtsr newtsr wnetsr nwetsr srewnt rsewnt serwnt esrwnt reswnt erswnt srwent rswent swrent wsrent rwsent wrsent sewrnt eswrnt swernt wsernt ewsrnt wesrnt rewsnt erwsnt rwesnt wresnt ewrsnt wersnt srenwt rsenwt sernwt esrnwt resnwt ersnwt srnewt rsnewt snrewt nsrewt rnsewt nrsewt senrwt esnrwt snerwt nserwt ensrwt nesrwt renswt ernswt rneswt nreswt enrswt nerswt srwnet rswnet swrnet wsrnet rwsnet wrsnet srnwet rsnwet snrwet nsrwet rnswet nrswet swnret wsnret snwret nswret wnsret nwsret rwnset wrnset rnwset nrwset wnrset nwrset sewnrt eswnrt swenrt wsenrt ewsnrt wesnrt senwrt esnwrt snewrt nsewrt enswrt neswrt swnert wsnert snwert nswert wnsert nwsert ewnsrt wensrt enwsrt newsrt wnesrt nwesrt rewnst erwnst rwenst wrenst ewrnst wernst renwst ernwst rnewst nrewst enrwst nerwst rwnest wrnest rnwest nrwest wnrest nwrest ewnrst wenrst enwrst newrst wnerst nwerst trewns rtewns terwns etrwns retwns ertwns trwens rtwens twrens wtrens rwtens wrtens tewrns etwrns twerns wterns ewtrns wetrns rewtns erwtns rwetns wretns ewrtns wertns trenws rtenws ternws etrnws retnws ertnws trnews rtnews tnrews ntrews rntews nrtews tenrws etnrws tnerws nterws entrws netrws rentws erntws rnetws nretws enrtws nertws trwnes rtwnes twrnes wtrnes rwtnes wrtnes trnwes rtnwes tnrwes ntrwes rntwes nrtwes twnres wtnres tnwres ntwres wntres nwtres rwntes wrntes rnwtes nrwtes wnrtes nwrtes tewnrs etwnrs twenrs wtenrs ewtnrs wetnrs tenwrs etnwrs tnewrs ntewrs entwrs netwrs twners wtners tnwers ntwers wnters nwters ewntrs wentrs enwtrs newtrs wnetrs nwetrs rewnts erwnts rwents wrents ewrnts wernts renwts ernwts rnewts nrewts enrwts nerwts rwnets wrnets rnwets nrwets wnrets nwrets ewnrts wenrts enwrts newrts wnerts nwerts
Note: these 'words' (valid or invalid) are all the permutations of the word strewn. These words are obtained by scrambling the letters in strewn.