risent irsent rsient srient isrent sirent riesnt iresnt reisnt erisnt iersnt eirsnt rseint sreint resint ersint serint esrint isernt siernt iesrnt eisrnt seirnt esirnt risnet irsnet rsinet srinet isrnet sirnet rinset irnset rniset nriset inrset nirset rsniet srniet rnsiet nrsiet snriet nsriet isnret sinret insret nisret sniret nsiret rienst irenst reinst erinst iernst eirnst rinest irnest rniest nriest inrest nirest renist ernist rneist nreist enrist nerist ienrst einrst inerst nierst enirst neirst rsenit srenit resnit ersnit sernit esrnit rsneit srneit rnseit nrseit snreit nsreit rensit ernsit rnesit nresit enrsit nersit senrit esnrit snerit nserit ensrit nesrit isenrt sienrt iesnrt eisnrt seinrt esinrt isnert sinert insert nisert sniert nsiert iensrt einsrt inesrt niesrt enisrt neisrt senirt esnirt sneirt nseirt ensirt nesirt risetn irsetn rsietn srietn isretn siretn riestn irestn reistn eristn ierstn eirstn rseitn sreitn resitn ersitn seritn esritn isertn siertn iesrtn eisrtn seirtn esirtn risten irsten rsiten sriten isrten sirten ritsen irtsen rtisen trisen itrsen tirsen rstien srtien rtsien trsien strien tsrien istren sitren itsren tisren stiren tsiren rietsn iretsn reitsn eritsn iertsn eirtsn ritesn irtesn rtiesn triesn itresn tiresn retisn ertisn rteisn treisn etrisn terisn ietrsn eitrsn itersn tiersn etirsn teirsn rsetin sretin restin erstin sertin esrtin rstein srtein rtsein trsein strein tsrein retsin ertsin rtesin tresin etrsin tersin setrin estrin sterin tserin etsrin tesrin isetrn sietrn iestrn eistrn seitrn esitrn istern sitern itsern tisern stiern tsiern ietsrn eitsrn itesrn tiesrn etisrn teisrn setirn estirn steirn tseirn etsirn tesirn risnte irsnte rsinte srinte isrnte sirnte rinste irnste rniste nriste inrste nirste rsnite srnite rnsite nrsite snrite nsrite isnrte sinrte insrte nisrte snirte nsirte ristne irstne rsitne sritne isrtne sirtne ritsne irtsne rtisne trisne itrsne tirsne rstine srtine rtsine trsine strine tsrine istrne sitrne itsrne tisrne stirne tsirne rintse irntse rnitse nritse inrtse nirtse ritnse irtnse rtinse trinse itrnse tirnse rntise nrtise rtnise trnise ntrise tnrise intrse nitrse itnrse tinrse ntirse tnirse rsntie srntie rnstie nrstie snrtie nsrtie rstnie srtnie rtsnie trsnie strnie tsrnie rntsie nrtsie rtnsie trnsie ntrsie tnrsie sntrie nstrie stnrie tsnrie ntsrie tnsrie isntre sintre instre nistre snitre nsitre istnre sitnre itsnre tisnre stinre tsinre intsre nitsre itnsre tinsre ntisre tnisre sntire nstire stnire tsnire ntsire tnsire rients irents reints erints iernts eirnts rinets irnets rniets nriets inrets nirets renits ernits rneits nreits enrits nerits ienrts einrts inerts nierts enirts neirts rietns iretns reitns eritns iertns eirtns ritens irtens rtiens triens itrens tirens retins ertins rteins treins etrins terins ietrns eitrns iterns tierns etirns teirns rintes irntes rnites nrites inrtes nirtes ritnes irtnes rtines trines itrnes tirnes rnties nrties rtnies trnies ntries tnries intres nitres itnres tinres ntires tnires rentis erntis rnetis nretis enrtis nertis retnis ertnis rtenis trenis etrnis ternis rnteis nrteis rtneis trneis ntreis tnreis entris netris etnris tenris nteris tneris ientrs eintrs inetrs nietrs enitrs neitrs ietnrs eitnrs itenrs tienrs etinrs teinrs inters niters itners tiners ntiers tniers entirs netirs etnirs tenirs nteirs tneirs rsenti srenti resnti ersnti sernti esrnti rsneti srneti rnseti nrseti snreti nsreti rensti ernsti rnesti nresti enrsti nersti senrti esnrti snerti nserti ensrti nesrti rsetni sretni restni erstni sertni esrtni rsteni srteni rtseni trseni streni tsreni retsni ertsni rtesni tresni etrsni tersni setrni estrni sterni tserni etsrni tesrni rsntei srntei rnstei nrstei snrtei nsrtei rstnei srtnei rtsnei trsnei strnei tsrnei rntsei nrtsei rtnsei trnsei ntrsei tnrsei sntrei nstrei stnrei tsnrei ntsrei tnsrei rentsi erntsi rnetsi nretsi enrtsi nertsi retnsi ertnsi rtensi trensi etrnsi ternsi rntesi nrtesi rtnesi trnesi ntresi tnresi entrsi netrsi etnrsi tenrsi ntersi tnersi sentri esntri snetri nsetri enstri nestri setnri estnri stenri tsenri etsnri tesnri snteri nsteri stneri tsneri ntseri tnseri entsri netsri etnsri tensri ntesri tnesri isentr sientr iesntr eisntr seintr esintr isnetr sinetr insetr nisetr snietr nsietr ienstr einstr inestr niestr enistr neistr senitr esnitr sneitr nseitr ensitr nesitr isetnr sietnr iestnr eistnr seitnr esitnr istenr sitenr itsenr tisenr stienr tsienr ietsnr eitsnr itesnr tiesnr etisnr teisnr setinr estinr steinr tseinr etsinr tesinr isnter sinter inster nister sniter nsiter istner sitner itsner tisner stiner tsiner intser nitser itnser tinser ntiser tniser sntier nstier stnier tsnier ntsier tnsier ientsr eintsr inetsr nietsr enitsr neitsr ietnsr eitnsr itensr tiensr etinsr teinsr intesr nitesr itnesr tinesr ntiesr tniesr entisr netisr etnisr tenisr nteisr tneisr sentir esntir snetir nsetir enstir nestir setnir estnir stenir tsenir etsnir tesnir snteir nsteir stneir tsneir ntseir tnseir entsir netsir etnsir tensir ntesir tnesir
Note: these 'words' (valid or invalid) are all the permutations of the word risent. These words are obtained by scrambling the letters in risent.