nichts inchts ncihts cnihts icnhts cinhts nihcts inhcts nhicts hnicts ihncts hincts nchits cnhits nhcits hncits chnits hcnits ichnts cihnts ihcnts hicnts chints hcints nicths incths nciths cniths icnths cinths nitchs intchs ntichs tnichs itnchs tinchs nctihs cntihs ntcihs tncihs ctnihs tcnihs ictnhs citnhs itcnhs ticnhs ctinhs tcinhs nihtcs inhtcs nhitcs hnitcs ihntcs hintcs nithcs inthcs ntihcs tnihcs itnhcs tinhcs nhtics hntics nthics tnhics htnics thnics ihtncs hitncs ithncs tihncs htincs thincs nchtis cnhtis nhctis hnctis chntis hcntis ncthis cnthis ntchis tnchis ctnhis tcnhis nhtcis hntcis nthcis tnhcis htncis thncis chtnis hctnis cthnis tchnis htcnis thcnis ichtns cihtns ihctns hictns chitns hcitns icthns cithns itchns tichns ctihns tcihns ihtcns hitcns ithcns tihcns hticns thicns chtins hctins cthins tchins htcins thcins nichst inchst ncihst cnihst icnhst cinhst nihcst inhcst nhicst hnicst ihncst hincst nchist cnhist nhcist hncist chnist hcnist ichnst cihnst ihcnst hicnst chinst hcinst nicsht incsht ncisht cnisht icnsht cinsht nischt inscht nsicht snicht isncht sincht ncsiht cnsiht nsciht snciht csniht scniht icsnht cisnht iscnht sicnht csinht scinht nihsct inhsct nhisct hnisct ihnsct hinsct nishct inshct nsihct snihct isnhct sinhct nhsict hnsict nshict snhict hsnict shnict ihsnct hisnct ishnct sihnct hsinct shinct nchsit cnhsit nhcsit hncsit chnsit hcnsit ncshit cnshit nschit snchit csnhit scnhit nhscit hnscit nshcit snhcit hsncit shncit chsnit hcsnit cshnit schnit hscnit shcnit ichsnt cihsnt ihcsnt hicsnt chisnt hcisnt icshnt cishnt ischnt sichnt csihnt scihnt ihscnt hiscnt ishcnt sihcnt hsicnt shicnt chsint hcsint cshint schint hscint shcint nictsh inctsh ncitsh cnitsh icntsh cintsh nitcsh intcsh nticsh tnicsh itncsh tincsh nctish cntish ntcish tncish ctnish tcnish ictnsh citnsh itcnsh ticnsh ctinsh tcinsh nicsth incsth ncisth cnisth icnsth cinsth niscth inscth nsicth snicth isncth sincth ncsith cnsith nscith sncith csnith scnith icsnth cisnth iscnth sicnth csinth scinth nitsch intsch ntisch tnisch itnsch tinsch nistch instch nsitch snitch isntch sintch ntsich tnsich nstich sntich tsnich stnich itsnch tisnch istnch sitnch tsinch stinch nctsih cntsih ntcsih tncsih ctnsih tcnsih ncstih cnstih nsctih snctih csntih scntih ntscih tnscih nstcih sntcih tsncih stncih ctsnih tcsnih cstnih sctnih tscnih stcnih ictsnh citsnh itcsnh ticsnh ctisnh tcisnh icstnh cistnh isctnh sictnh csitnh scitnh itscnh tiscnh istcnh sitcnh tsicnh sticnh ctsinh tcsinh cstinh sctinh tscinh stcinh nihtsc inhtsc nhitsc hnitsc ihntsc hintsc nithsc inthsc ntihsc tnihsc itnhsc tinhsc nhtisc hntisc nthisc tnhisc htnisc thnisc ihtnsc hitnsc ithnsc tihnsc htinsc thinsc nihstc inhstc nhistc hnistc ihnstc hinstc nishtc inshtc nsihtc snihtc isnhtc sinhtc nhsitc hnsitc nshitc snhitc hsnitc shnitc ihsntc hisntc ishntc sihntc hsintc shintc nitshc intshc ntishc tnishc itnshc tinshc nisthc insthc nsithc snithc isnthc sinthc ntsihc tnsihc nstihc sntihc tsnihc stnihc itsnhc tisnhc istnhc sitnhc tsinhc stinhc nhtsic hntsic nthsic tnhsic htnsic thnsic nhstic hnstic nshtic snhtic hsntic shntic ntshic tnshic nsthic snthic tsnhic stnhic htsnic thsnic hstnic shtnic tshnic sthnic ihtsnc hitsnc ithsnc tihsnc htisnc thisnc ihstnc histnc ishtnc sihtnc hsitnc shitnc itshnc tishnc isthnc sithnc tsihnc stihnc htsinc thsinc hstinc shtinc tshinc sthinc nchtsi cnhtsi nhctsi hnctsi chntsi hcntsi ncthsi cnthsi ntchsi tnchsi ctnhsi tcnhsi nhtcsi hntcsi nthcsi tnhcsi htncsi thncsi chtnsi hctnsi cthnsi tchnsi htcnsi thcnsi nchsti cnhsti nhcsti hncsti chnsti hcnsti ncshti cnshti nschti snchti csnhti scnhti nhscti hnscti nshcti snhcti hsncti shncti chsnti hcsnti cshnti schnti hscnti shcnti nctshi cntshi ntcshi tncshi ctnshi tcnshi ncsthi cnsthi nscthi sncthi csnthi scnthi ntschi tnschi nstchi sntchi tsnchi stnchi ctsnhi tcsnhi cstnhi sctnhi tscnhi stcnhi nhtsci hntsci nthsci tnhsci htnsci thnsci nhstci hnstci nshtci snhtci hsntci shntci ntshci tnshci nsthci snthci tsnhci stnhci htsnci thsnci hstnci shtnci tshnci sthnci chtsni hctsni cthsni tchsni htcsni thcsni chstni hcstni cshtni schtni hsctni shctni ctshni tcshni csthni scthni tschni stchni htscni thscni hstcni shtcni tshcni sthcni ichtsn cihtsn ihctsn hictsn chitsn hcitsn icthsn cithsn itchsn tichsn ctihsn tcihsn ihtcsn hitcsn ithcsn tihcsn hticsn thicsn chtisn hctisn cthisn tchisn htcisn thcisn ichstn cihstn ihcstn hicstn chistn hcistn icshtn cishtn ischtn sichtn csihtn scihtn ihsctn hisctn ishctn sihctn hsictn shictn chsitn hcsitn cshitn schitn hscitn shcitn ictshn citshn itcshn ticshn ctishn tcishn icsthn cisthn iscthn sicthn csithn scithn itschn tischn istchn sitchn tsichn stichn ctsihn tcsihn cstihn sctihn tscihn stcihn ihtscn hitscn ithscn tihscn htiscn thiscn ihstcn histcn ishtcn sihtcn hsitcn shitcn itshcn tishcn isthcn sithcn tsihcn stihcn htsicn thsicn hsticn shticn tshicn sthicn chtsin hctsin cthsin tchsin htcsin thcsin chstin hcstin cshtin schtin hsctin shctin ctshin tcshin csthin scthin tschin stchin htscin thscin hstcin shtcin tshcin sthcin
Note: these 'words' (valid or invalid) are all the permutations of the word nichts. These words are obtained by scrambling the letters in nichts.