unfair nufair ufnair funair nfuair fnuair unafir nuafir uanfir aunfir naufir anufir ufanir fuanir uafnir aufnir faunir afunir nfauir fnauir nafuir anfuir fanuir afnuir unfiar nufiar ufniar funiar nfuiar fnuiar unifar nuifar uinfar iunfar niufar inufar ufinar fuinar uifnar iufnar fiunar ifunar nfiuar fniuar nifuar infuar finuar ifnuar unaifr nuaifr uanifr aunifr nauifr anuifr uniafr nuiafr uinafr iunafr niuafr inuafr uainfr auinfr uianfr iuanfr aiunfr iaunfr naiufr aniufr niaufr inaufr ainufr ianufr ufainr fuainr uafinr aufinr fauinr afuinr ufianr fuianr uifanr iufanr fiuanr ifuanr uaifnr auifnr uiafnr iuafnr aiufnr iaufnr faiunr afiunr fiaunr ifaunr aifunr iafunr nfaiur fnaiur nafiur anfiur faniur afniur nfiaur fniaur nifaur infaur finaur ifnaur naifur anifur niafur inafur ainfur ianfur fainur afinur fianur ifanur aifnur iafnur unfari nufari ufnari funari nfuari fnuari unafri nuafri uanfri aunfri naufri anufri ufanri fuanri uafnri aufnri faunri afunri nfauri fnauri nafuri anfuri fanuri afnuri unfrai nufrai ufnrai funrai nfurai fnurai unrfai nurfai urnfai runfai nrufai rnufai ufrnai furnai urfnai rufnai frunai rfunai nfruai fnruai nrfuai rnfuai frnuai rfnuai unarfi nuarfi uanrfi aunrfi naurfi anurfi unrafi nurafi urnafi runafi nruafi rnuafi uarnfi aurnfi uranfi ruanfi arunfi raunfi narufi anrufi nraufi rnaufi arnufi ranufi ufarni fuarni uafrni aufrni faurni afurni ufrani furani urfani rufani fruani rfuani uarfni aurfni urafni ruafni arufni raufni faruni afruni frauni rfauni arfuni rafuni nfarui fnarui nafrui anfrui fanrui afnrui nfraui fnraui nrfaui rnfaui frnaui rfnaui narfui anrfui nrafui rnafui arnfui ranfui farnui afrnui franui rfanui arfnui rafnui unfira nufira ufnira funira nfuira fnuira unifra nuifra uinfra iunfra niufra inufra ufinra fuinra uifnra iufnra fiunra ifunra nfiura fniura nifura infura finura ifnura unfria nufria ufnria funria nfuria fnuria unrfia nurfia urnfia runfia nrufia rnufia ufrnia furnia urfnia rufnia frunia rfunia nfruia fnruia nrfuia rnfuia frnuia rfnuia unirfa nuirfa uinrfa iunrfa niurfa inurfa unrifa nurifa urnifa runifa nruifa rnuifa uirnfa iurnfa urinfa ruinfa irunfa riunfa nirufa inrufa nriufa rniufa irnufa rinufa ufirna fuirna uifrna iufrna fiurna ifurna ufrina furina urfina rufina fruina rfuina uirfna iurfna urifna ruifna irufna riufna firuna ifruna friuna rfiuna irfuna rifuna nfirua fnirua nifrua infrua finrua ifnrua nfriua fnriua nrfiua rnfiua frniua rfniua nirfua inrfua nrifua rnifua irnfua rinfua firnua ifrnua frinua rfinua irfnua rifnua unairf nuairf uanirf aunirf nauirf anuirf uniarf nuiarf uinarf iunarf niuarf inuarf uainrf auinrf uianrf iuanrf aiunrf iaunrf naiurf aniurf niaurf inaurf ainurf ianurf unarif nuarif uanrif aunrif naurif anurif unraif nuraif urnaif runaif nruaif rnuaif uarnif aurnif uranif ruanif arunif raunif naruif anruif nrauif rnauif arnuif ranuif uniraf nuiraf uinraf iunraf niuraf inuraf unriaf nuriaf urniaf runiaf nruiaf rnuiaf uirnaf iurnaf urinaf ruinaf irunaf riunaf niruaf inruaf nriuaf rniuaf irnuaf rinuaf uairnf auirnf uiarnf iuarnf aiurnf iaurnf uarinf aurinf urainf ruainf aruinf rauinf uiranf iuranf urianf ruianf iruanf riuanf airunf iarunf ariunf raiunf iraunf riaunf nairuf aniruf niaruf inaruf ainruf ianruf nariuf anriuf nraiuf rnaiuf arniuf raniuf nirauf inrauf nriauf rniauf irnauf rinauf airnuf iarnuf arinuf rainuf iranuf rianuf ufairn fuairn uafirn aufirn fauirn afuirn ufiarn fuiarn uifarn iufarn fiuarn ifuarn uaifrn auifrn uiafrn iuafrn aiufrn iaufrn faiurn afiurn fiaurn ifaurn aifurn iafurn ufarin fuarin uafrin aufrin faurin afurin ufrain furain urfain rufain fruain rfuain uarfin aurfin urafin ruafin arufin raufin faruin afruin frauin rfauin arfuin rafuin ufiran fuiran uifran iufran fiuran ifuran ufrian furian urfian rufian fruian rfuian uirfan iurfan urifan ruifan irufan riufan firuan ifruan friuan rfiuan irfuan rifuan uairfn auirfn uiarfn iuarfn aiurfn iaurfn uarifn aurifn uraifn ruaifn aruifn rauifn uirafn iurafn uriafn ruiafn iruafn riuafn airufn iarufn ariufn raiufn iraufn riaufn fairun afirun fiarun ifarun aifrun iafrun fariun afriun fraiun rfaiun arfiun rafiun firaun ifraun friaun rfiaun irfaun rifaun airfun iarfun arifun raifun irafun riafun nfairu fnairu nafiru anfiru faniru afniru nfiaru fniaru nifaru infaru finaru ifnaru naifru anifru niafru inafru ainfru ianfru fainru afinru fianru ifanru aifnru iafnru nfariu fnariu nafriu anfriu fanriu afnriu nfraiu fnraiu nrfaiu rnfaiu frnaiu rfnaiu narfiu anrfiu nrafiu rnafiu arnfiu ranfiu farniu afrniu franiu rfaniu arfniu rafniu nfirau fnirau nifrau infrau finrau ifnrau nfriau fnriau nrfiau rnfiau frniau rfniau nirfau inrfau nrifau rnifau irnfau rinfau firnau ifrnau frinau rfinau irfnau rifnau nairfu anirfu niarfu inarfu ainrfu ianrfu narifu anrifu nraifu rnaifu arnifu ranifu nirafu inrafu nriafu rniafu irnafu rinafu airnfu iarnfu arinfu rainfu iranfu rianfu fairnu afirnu fiarnu ifarnu aifrnu iafrnu farinu afrinu frainu rfainu arfinu rafinu firanu ifranu frianu rfianu irfanu rifanu airfnu iarfnu arifnu raifnu irafnu riafnu
Note: these 'words' (valid or invalid) are all the permutations of the word unfair. These words are obtained by scrambling the letters in unfair.