nigers ingers ngiers gniers igners giners niegrs inegrs neigrs enigrs iengrs eingrs ngeirs gneirs negirs engirs genirs egnirs igenrs gienrs iegnrs eignrs geinrs eginrs nigres ingres ngires gnires ignres ginres nirges inrges nriges rniges irnges ringes ngries gnries nrgies rngies grnies rgnies igrnes girnes irgnes rignes grines rgines niergs inergs neirgs enirgs ienrgs einrgs niregs inregs nriegs rniegs irnegs rinegs nerigs enrigs nreigs rneigs ernigs renigs ierngs eirngs irengs riengs erings reings ngeris gneris negris engris genris egnris ngreis gnreis nrgeis rngeis grneis rgneis nergis enrgis nregis rnegis erngis rengis gernis egrnis grenis rgenis ergnis regnis igerns gierns iegrns eigrns geirns egirns igrens girens irgens rigens griens rgiens iergns eirgns iregns riegns erigns reigns gerins egrins greins rgeins ergins regins nigesr ingesr ngiesr gniesr ignesr ginesr niegsr inegsr neigsr enigsr iengsr eingsr ngeisr gneisr negisr engisr genisr egnisr igensr giensr iegnsr eignsr geinsr eginsr nigser ingser ngiser gniser ignser ginser nisger insger nsiger sniger isnger singer ngsier gnsier nsgier sngier gsnier sgnier igsner gisner isgner signer gsiner sginer niesgr inesgr neisgr enisgr iensgr einsgr nisegr insegr nsiegr sniegr isnegr sinegr nesigr ensigr nseigr sneigr esnigr senigr iesngr eisngr isengr siengr esingr seingr ngesir gnesir negsir engsir gensir egnsir ngseir gnseir nsgeir sngeir gsneir sgneir nesgir ensgir nsegir snegir esngir sengir gesnir egsnir gsenir sgenir esgnir segnir igesnr giesnr iegsnr eigsnr geisnr egisnr igsenr gisenr isgenr sigenr gsienr sgienr iesgnr eisgnr isegnr siegnr esignr seignr gesinr egsinr gseinr sgeinr esginr seginr nigrse ingrse ngirse gnirse ignrse ginrse nirgse inrgse nrigse rnigse irngse ringse ngrise gnrise nrgise rngise grnise rgnise igrnse girnse irgnse rignse grinse rginse nigsre ingsre ngisre gnisre ignsre ginsre nisgre insgre nsigre snigre isngre singre ngsire gnsire nsgire sngire gsnire sgnire igsnre gisnre isgnre signre gsinre sginre nirsge inrsge nrisge rnisge irnsge rinsge nisrge insrge nsirge snirge isnrge sinrge nrsige rnsige nsrige snrige rsnige srnige irsnge risnge isrnge sirnge rsinge sringe ngrsie gnrsie nrgsie rngsie grnsie rgnsie ngsrie gnsrie nsgrie sngrie gsnrie sgnrie nrsgie rnsgie nsrgie snrgie rsngie srngie grsnie rgsnie gsrnie sgrnie rsgnie srgnie igrsne girsne irgsne rigsne grisne rgisne igsrne gisrne isgrne sigrne gsirne sgirne irsgne risgne isrgne sirgne rsigne srigne grsine rgsine gsrine sgrine rsgine srgine niersg inersg neirsg enirsg ienrsg einrsg niresg inresg nriesg rniesg irnesg rinesg nerisg enrisg nreisg rneisg ernisg renisg iernsg eirnsg irensg riensg erinsg reinsg niesrg inesrg neisrg enisrg iensrg einsrg niserg inserg nsierg snierg isnerg sinerg nesirg ensirg nseirg sneirg esnirg senirg iesnrg eisnrg isenrg sienrg esinrg seinrg nirseg inrseg nriseg rniseg irnseg rinseg nisreg insreg nsireg snireg isnreg sinreg nrsieg rnsieg nsrieg snrieg rsnieg srnieg irsneg risneg isrneg sirneg rsineg srineg nersig enrsig nresig rnesig ernsig rensig nesrig ensrig nserig snerig esnrig senrig nrseig rnseig nsreig snreig rsneig srneig ersnig resnig esrnig sernig rsenig srenig iersng eirsng iresng riesng erisng reisng iesrng eisrng iserng sierng esirng seirng irseng riseng isreng sireng rsieng srieng ersing resing esring sering rseing sreing ngersi gnersi negrsi engrsi genrsi egnrsi ngresi gnresi nrgesi rngesi grnesi rgnesi nergsi enrgsi nregsi rnegsi erngsi rengsi gernsi egrnsi grensi rgensi ergnsi regnsi ngesri gnesri negsri engsri gensri egnsri ngseri gnseri nsgeri sngeri gsneri sgneri nesgri ensgri nsegri snegri esngri sengri gesnri egsnri gsenri sgenri esgnri segnri ngrsei gnrsei nrgsei rngsei grnsei rgnsei ngsrei gnsrei nsgrei sngrei gsnrei sgnrei nrsgei rnsgei nsrgei snrgei rsngei srngei grsnei rgsnei gsrnei sgrnei rsgnei srgnei nersgi enrsgi nresgi rnesgi ernsgi rensgi nesrgi ensrgi nsergi snergi esnrgi senrgi nrsegi rnsegi nsregi snregi rsnegi srnegi ersngi resngi esrngi serngi rsengi srengi gersni egrsni gresni rgesni ergsni regsni gesrni egsrni gserni sgerni esgrni segrni grseni rgseni gsreni sgreni rsgeni srgeni ersgni resgni esrgni sergni rsegni sregni igersn giersn iegrsn eigrsn geirsn egirsn igresn giresn irgesn rigesn griesn rgiesn iergsn eirgsn iregsn riegsn erigsn reigsn gerisn egrisn greisn rgeisn ergisn regisn igesrn giesrn iegsrn eigsrn geisrn egisrn igsern gisern isgern sigern gsiern sgiern iesgrn eisgrn isegrn siegrn esigrn seigrn gesirn egsirn gseirn sgeirn esgirn segirn igrsen girsen irgsen rigsen grisen rgisen igsren gisren isgren sigren gsiren sgiren irsgen risgen isrgen sirgen rsigen srigen grsien rgsien gsrien sgrien rsgien srgien iersgn eirsgn iresgn riesgn erisgn reisgn iesrgn eisrgn isergn siergn esirgn seirgn irsegn risegn isregn siregn rsiegn sriegn ersign resign esrign serign rseign sreign gersin egrsin gresin rgesin ergsin regsin gesrin egsrin gserin sgerin esgrin segrin grsein rgsein gsrein sgrein rsgein srgein ersgin resgin esrgin sergin rsegin sregin
Note: these 'words' (valid or invalid) are all the permutations of the word nigers. These words are obtained by scrambling the letters in nigers.