nairus anirus niarus inarus ainrus ianrus narius anrius nraius rnaius arnius ranius niraus inraus nriaus rniaus irnaus rinaus airnus iarnus arinus rainus iranus rianus naiurs aniurs niaurs inaurs ainurs ianurs nauirs anuirs nuairs unairs aunirs uanirs niuars inuars nuiars uniars iunars uinars aiunrs iaunrs auinrs uainrs iuanrs uianrs naruis anruis nrauis rnauis arnuis ranuis nauris anuris nuaris unaris aunris uanris nruais rnuais nurais unrais runais urnais arunis raunis aurnis uarnis ruanis uranis niruas inruas nriuas rniuas irnuas rinuas niuras inuras nuiras uniras iunras uinras nruias rnuias nurias unrias runias urnias irunas riunas iurnas uirnas ruinas urinas airuns iaruns ariuns raiuns irauns riauns aiurns iaurns auirns uairns iuarns uiarns aruins rauins aurins uarins ruains urains iruans riuans iurans uirans ruians urians nairsu anirsu niarsu inarsu ainrsu ianrsu narisu anrisu nraisu rnaisu arnisu ranisu nirasu inrasu nriasu rniasu irnasu rinasu airnsu iarnsu arinsu rainsu iransu riansu naisru anisru niasru inasru ainsru iansru nasiru ansiru nsairu snairu asniru saniru nisaru insaru nsiaru sniaru isnaru sinaru aisnru iasnru asinru sainru isanru sianru narsiu anrsiu nrasiu rnasiu arnsiu ransiu nasriu ansriu nsariu snariu asnriu sanriu nrsaiu rnsaiu nsraiu snraiu rsnaiu srnaiu arsniu rasniu asrniu sarniu rsaniu sraniu nirsau inrsau nrisau rnisau irnsau rinsau nisrau insrau nsirau snirau isnrau sinrau nrsiau rnsiau nsriau snriau rsniau srniau irsnau risnau isrnau sirnau rsinau srinau airsnu iarsnu arisnu raisnu irasnu riasnu aisrnu iasrnu asirnu sairnu isarnu siarnu arsinu rasinu asrinu sarinu rsainu srainu irsanu risanu isranu siranu rsianu srianu naiusr aniusr niausr inausr ainusr ianusr nauisr anuisr nuaisr unaisr aunisr uanisr niuasr inuasr nuiasr uniasr iunasr uinasr aiunsr iaunsr auinsr uainsr iuansr uiansr naisur anisur niasur inasur ainsur iansur nasiur ansiur nsaiur snaiur asniur saniur nisaur insaur nsiaur sniaur isnaur sinaur aisnur iasnur asinur sainur isanur sianur nausir anusir nuasir unasir aunsir uansir nasuir ansuir nsauir snauir asnuir sanuir nusair unsair nsuair snuair usnair sunair ausnir uasnir asunir saunir usanir suanir niusar inusar nuisar unisar iunsar uinsar nisuar insuar nsiuar sniuar isnuar sinuar nusiar unsiar nsuiar snuiar usniar suniar iusnar uisnar isunar siunar usinar suinar aiusnr iausnr auisnr uaisnr iuasnr uiasnr aisunr iasunr asiunr saiunr isaunr siaunr ausinr uasinr asuinr sauinr usainr suainr iusanr uisanr isuanr siuanr usianr suianr narusi anrusi nrausi rnausi arnusi ranusi naursi anursi nuarsi unarsi aunrsi uanrsi nruasi rnuasi nurasi unrasi runasi urnasi arunsi raunsi aurnsi uarnsi ruansi uransi narsui anrsui nrasui rnasui arnsui ransui nasrui ansrui nsarui snarui asnrui sanrui nrsaui rnsaui nsraui snraui rsnaui srnaui arsnui rasnui asrnui sarnui rsanui sranui nausri anusri nuasri unasri aunsri uansri nasuri ansuri nsauri snauri asnuri sanuri nusari unsari nsuari snuari usnari sunari ausnri uasnri asunri saunri usanri suanri nrusai rnusai nursai unrsai runsai urnsai nrsuai rnsuai nsruai snruai rsnuai srnuai nusrai unsrai nsurai snurai usnrai sunrai rusnai ursnai rsunai srunai usrnai surnai arusni rausni aursni uarsni ruasni urasni arsuni rasuni asruni saruni rsauni srauni ausrni uasrni asurni saurni usarni suarni rusani ursani rsuani sruani usrani surani nirusa inrusa nriusa rniusa irnusa rinusa niursa inursa nuirsa unirsa iunrsa uinrsa nruisa rnuisa nurisa unrisa runisa urnisa irunsa riunsa iurnsa uirnsa ruinsa urinsa nirsua inrsua nrisua rnisua irnsua rinsua nisrua insrua nsirua snirua isnrua sinrua nrsiua rnsiua nsriua snriua rsniua srniua irsnua risnua isrnua sirnua rsinua srinua niusra inusra nuisra unisra iunsra uinsra nisura insura nsiura sniura isnura sinura nusira unsira nsuira snuira usnira sunira iusnra uisnra isunra siunra usinra suinra nrusia rnusia nursia unrsia runsia urnsia nrsuia rnsuia nsruia snruia rsnuia srnuia nusria unsria nsuria snuria usnria sunria rusnia ursnia rsunia srunia usrnia surnia irusna riusna iursna uirsna ruisna urisna irsuna risuna isruna siruna rsiuna sriuna iusrna uisrna isurna siurna usirna suirna rusina ursina rsuina sruina usrina surina airusn iarusn ariusn raiusn irausn riausn aiursn iaursn auirsn uairsn iuarsn uiarsn aruisn rauisn aurisn uarisn ruaisn uraisn iruasn riuasn iurasn uirasn ruiasn uriasn airsun iarsun arisun raisun irasun riasun aisrun iasrun asirun sairun isarun siarun arsiun rasiun asriun sariun rsaiun sraiun irsaun risaun israun siraun rsiaun sriaun aiusrn iausrn auisrn uaisrn iuasrn uiasrn aisurn iasurn asiurn saiurn isaurn siaurn ausirn uasirn asuirn sauirn usairn suairn iusarn uisarn isuarn siuarn usiarn suiarn arusin rausin aursin uarsin ruasin urasin arsuin rasuin asruin saruin rsauin srauin ausrin uasrin asurin saurin usarin suarin rusain ursain rsuain sruain usrain surain irusan riusan iursan uirsan ruisan urisan irsuan risuan isruan siruan rsiuan sriuan iusran uisran isuran siuran usiran suiran rusian ursian rsuian sruian usrian surian
Note: these 'words' (valid or invalid) are all the permutations of the word nairus. These words are obtained by scrambling the letters in nairus.