nights inghts ngihts gnihts ignhts ginhts nihgts inhgts nhigts hnigts ihngts hingts nghits gnhits nhgits hngits ghnits hgnits ighnts gihnts ihgnts hignts ghints hgints nigths ingths ngiths gniths ignths ginths nitghs intghs ntighs tnighs itnghs tinghs ngtihs gntihs ntgihs tngihs gtnihs tgnihs igtnhs gitnhs itgnhs tignhs gtinhs tginhs nihtgs inhtgs nhitgs hnitgs ihntgs hintgs nithgs inthgs ntihgs tnihgs itnhgs tinhgs nhtigs hntigs nthigs tnhigs htnigs thnigs ihtngs hitngs ithngs tihngs htings things nghtis gnhtis nhgtis hngtis ghntis hgntis ngthis gnthis ntghis tnghis gtnhis tgnhis nhtgis hntgis nthgis tnhgis htngis thngis ghtnis hgtnis gthnis tghnis htgnis thgnis ightns gihtns ihgtns higtns ghitns hgitns igthns githns itghns tighns gtihns tgihns ihtgns hitgns ithgns tihgns htigns thigns ghtins hgtins gthins tghins htgins thgins nighst inghst ngihst gnihst ignhst ginhst nihgst inhgst nhigst hnigst ihngst hingst nghist gnhist nhgist hngist ghnist hgnist ighnst gihnst ihgnst hignst ghinst hginst nigsht ingsht ngisht gnisht ignsht ginsht nisght insght nsight snight isnght singht ngsiht gnsiht nsgiht sngiht gsniht sgniht igsnht gisnht isgnht signht gsinht sginht nihsgt inhsgt nhisgt hnisgt ihnsgt hinsgt nishgt inshgt nsihgt snihgt isnhgt sinhgt nhsigt hnsigt nshigt snhigt hsnigt shnigt ihsngt hisngt ishngt sihngt hsingt shingt nghsit gnhsit nhgsit hngsit ghnsit hgnsit ngshit gnshit nsghit snghit gsnhit sgnhit nhsgit hnsgit nshgit snhgit hsngit shngit ghsnit hgsnit gshnit sghnit hsgnit shgnit ighsnt gihsnt ihgsnt higsnt ghisnt hgisnt igshnt gishnt isghnt sighnt gsihnt sgihnt ihsgnt hisgnt ishgnt sihgnt hsignt shignt ghsint hgsint gshint sghint hsgint shgint nigtsh ingtsh ngitsh gnitsh igntsh gintsh nitgsh intgsh ntigsh tnigsh itngsh tingsh ngtish gntish ntgish tngish gtnish tgnish igtnsh gitnsh itgnsh tignsh gtinsh tginsh nigsth ingsth ngisth gnisth ignsth ginsth nisgth insgth nsigth snigth isngth singth ngsith gnsith nsgith sngith gsnith sgnith igsnth gisnth isgnth signth gsinth sginth nitsgh intsgh ntisgh tnisgh itnsgh tinsgh nistgh instgh nsitgh snitgh isntgh sintgh ntsigh tnsigh nstigh sntigh tsnigh stnigh itsngh tisngh istngh sitngh tsingh stingh ngtsih gntsih ntgsih tngsih gtnsih tgnsih ngstih gnstih nsgtih sngtih gsntih sgntih ntsgih tnsgih nstgih sntgih tsngih stngih gtsnih tgsnih gstnih sgtnih tsgnih stgnih igtsnh gitsnh itgsnh tigsnh gtisnh tgisnh igstnh gistnh isgtnh sigtnh gsitnh sgitnh itsgnh tisgnh istgnh sitgnh tsignh stignh gtsinh tgsinh gstinh sgtinh tsginh stginh nihtsg inhtsg nhitsg hnitsg ihntsg hintsg nithsg inthsg ntihsg tnihsg itnhsg tinhsg nhtisg hntisg nthisg tnhisg htnisg thnisg ihtnsg hitnsg ithnsg tihnsg htinsg thinsg nihstg inhstg nhistg hnistg ihnstg hinstg nishtg inshtg nsihtg snihtg isnhtg sinhtg nhsitg hnsitg nshitg snhitg hsnitg shnitg ihsntg hisntg ishntg sihntg hsintg shintg nitshg intshg ntishg tnishg itnshg tinshg nisthg insthg nsithg snithg isnthg sinthg ntsihg tnsihg nstihg sntihg tsnihg stnihg itsnhg tisnhg istnhg sitnhg tsinhg stinhg nhtsig hntsig nthsig tnhsig htnsig thnsig nhstig hnstig nshtig snhtig hsntig shntig ntshig tnshig nsthig snthig tsnhig stnhig htsnig thsnig hstnig shtnig tshnig sthnig ihtsng hitsng ithsng tihsng htisng thisng ihstng histng ishtng sihtng hsitng shitng itshng tishng isthng sithng tsihng stihng htsing thsing hsting shting tshing sthing nghtsi gnhtsi nhgtsi hngtsi ghntsi hgntsi ngthsi gnthsi ntghsi tnghsi gtnhsi tgnhsi nhtgsi hntgsi nthgsi tnhgsi htngsi thngsi ghtnsi hgtnsi gthnsi tghnsi htgnsi thgnsi nghsti gnhsti nhgsti hngsti ghnsti hgnsti ngshti gnshti nsghti snghti gsnhti sgnhti nhsgti hnsgti nshgti snhgti hsngti shngti ghsnti hgsnti gshnti sghnti hsgnti shgnti ngtshi gntshi ntgshi tngshi gtnshi tgnshi ngsthi gnsthi nsgthi sngthi gsnthi sgnthi ntsghi tnsghi nstghi sntghi tsnghi stnghi gtsnhi tgsnhi gstnhi sgtnhi tsgnhi stgnhi nhtsgi hntsgi nthsgi tnhsgi htnsgi thnsgi nhstgi hnstgi nshtgi snhtgi hsntgi shntgi ntshgi tnshgi nsthgi snthgi tsnhgi stnhgi htsngi thsngi hstngi shtngi tshngi sthngi ghtsni hgtsni gthsni tghsni htgsni thgsni ghstni hgstni gshtni sghtni hsgtni shgtni gtshni tgshni gsthni sgthni tsghni stghni htsgni thsgni hstgni shtgni tshgni sthgni ightsn gihtsn ihgtsn higtsn ghitsn hgitsn igthsn githsn itghsn tighsn gtihsn tgihsn ihtgsn hitgsn ithgsn tihgsn htigsn thigsn ghtisn hgtisn gthisn tghisn htgisn thgisn ighstn gihstn ihgstn higstn ghistn hgistn igshtn gishtn isghtn sightn gsihtn sgihtn ihsgtn hisgtn ishgtn sihgtn hsigtn shigtn ghsitn hgsitn gshitn sghitn hsgitn shgitn igtshn gitshn itgshn tigshn gtishn tgishn igsthn gisthn isgthn sigthn gsithn sgithn itsghn tisghn istghn sitghn tsighn stighn gtsihn tgsihn gstihn sgtihn tsgihn stgihn ihtsgn hitsgn ithsgn tihsgn htisgn thisgn ihstgn histgn ishtgn sihtgn hsitgn shitgn itshgn tishgn isthgn sithgn tsihgn stihgn htsign thsign hstign shtign tshign sthign ghtsin hgtsin gthsin tghsin htgsin thgsin ghstin hgstin gshtin sghtin hsgtin shgtin gtshin tgshin gsthin sgthin tsghin stghin htsgin thsgin hstgin shtgin tshgin sthgin
Note: these 'words' (valid or invalid) are all the permutations of the word nights. These words are obtained by scrambling the letters in nights.