gneiss ngeiss geniss egniss negiss engiss gniess ngiess giness igness nigess ingess geinss eginss gienss igenss eignss iegnss neigss enigss niegss inegss eingss iengss gnesis ngesis gensis egnsis negsis engsis gnseis ngseis gsneis sgneis nsgeis sngeis gesnis egsnis gsenis sgenis esgnis segnis nesgis ensgis nsegis snegis esngis sengis gnises ngises ginses ignses nigses ingses gnsies ngsies gsnies sgnies nsgies sngies gisnes igsnes gsines sgines isgnes signes nisges insges nsiges sniges isnges singes geisns egisns giesns igesns eigsns iegsns gesins egsins gseins sgeins esgins segins gisens igsens gsiens sgiens isgens sigens eisgns iesgns esigns seigns isegns siegns neisgs enisgs niesgs inesgs einsgs iensgs nesigs ensigs nseigs sneigs esnigs senigs nisegs insegs nsiegs sniegs isnegs sinegs eisngs iesngs esings seings isengs siengs gneiss ngeiss geniss egniss negiss engiss gniess ngiess giness igness nigess ingess geinss eginss gienss igenss eignss iegnss neigss enigss niegss inegss eingss iengss gnesis ngesis gensis egnsis negsis engsis gnseis ngseis gsneis sgneis nsgeis sngeis gesnis egsnis gsenis sgenis esgnis segnis nesgis ensgis nsegis snegis esngis sengis gnises ngises ginses ignses nigses ingses gnsies ngsies gsnies sgnies nsgies sngies gisnes igsnes gsines sgines isgnes signes nisges insges nsiges sniges isnges singes geisns egisns giesns igesns eigsns iegsns gesins egsins gseins sgeins esgins segins gisens igsens gsiens sgiens isgens sigens eisgns iesgns esigns seigns isegns siegns neisgs enisgs niesgs inesgs einsgs iensgs nesigs ensigs nseigs sneigs esnigs senigs nisegs insegs nsiegs sniegs isnegs sinegs eisngs iesngs esings seings isengs siengs gnessi ngessi genssi egnssi negssi engssi gnsesi ngsesi gsnesi sgnesi nsgesi sngesi gesnsi egsnsi gsensi sgensi esgnsi segnsi nesgsi ensgsi nsegsi snegsi esngsi sengsi gnessi ngessi genssi egnssi negssi engssi gnsesi ngsesi gsnesi sgnesi nsgesi sngesi gesnsi egsnsi gsensi sgensi esgnsi segnsi nesgsi ensgsi nsegsi snegsi esngsi sengsi gnssei ngssei gsnsei sgnsei nsgsei sngsei gnssei ngssei gsnsei sgnsei nsgsei sngsei gssnei sgsnei gssnei sgsnei ssgnei ssgnei nssgei snsgei nssgei snsgei ssngei ssngei gessni egssni gsesni sgesni esgsni segsni gessni egssni gsesni sgesni esgsni segsni gsseni sgseni gsseni sgseni ssgeni ssgeni essgni sesgni essgni sesgni ssegni ssegni nessgi enssgi nsesgi snesgi esnsgi sensgi nessgi enssgi nsesgi snesgi esnsgi sensgi nssegi snsegi nssegi snsegi ssnegi ssnegi essngi sesngi essngi sesngi ssengi ssengi gnisse ngisse ginsse ignsse nigsse ingsse gnsise ngsise gsnise sgnise nsgise sngise gisnse igsnse gsinse sginse isgnse signse nisgse insgse nsigse snigse isngse singse gnisse ngisse ginsse ignsse nigsse ingsse gnsise ngsise gsnise sgnise nsgise sngise gisnse igsnse gsinse sginse isgnse signse nisgse insgse nsigse snigse isngse singse gnssie ngssie gsnsie sgnsie nsgsie sngsie gnssie ngssie gsnsie sgnsie nsgsie sngsie gssnie sgsnie gssnie sgsnie ssgnie ssgnie nssgie snsgie nssgie snsgie ssngie ssngie gissne igssne gsisne sgisne isgsne sigsne gissne igssne gsisne sgisne isgsne sigsne gssine sgsine gssine sgsine ssgine ssgine issgne sisgne issgne sisgne ssigne ssigne nissge inssge nsisge snisge isnsge sinsge nissge inssge nsisge snisge isnsge sinsge nssige snsige nssige snsige ssnige ssnige issnge sisnge issnge sisnge ssinge ssinge geissn egissn giessn igessn eigssn iegssn gesisn egsisn gseisn sgeisn esgisn segisn gisesn igsesn gsiesn sgiesn isgesn sigesn eisgsn iesgsn esigsn seigsn isegsn siegsn geissn egissn giessn igessn eigssn iegssn gesisn egsisn gseisn sgeisn esgisn segisn gisesn igsesn gsiesn sgiesn isgesn sigesn eisgsn iesgsn esigsn seigsn isegsn siegsn gessin egssin gsesin sgesin esgsin segsin gessin egssin gsesin sgesin esgsin segsin gssein sgsein gssein sgsein ssgein ssgein essgin sesgin essgin sesgin ssegin ssegin gissen igssen gsisen sgisen isgsen sigsen gissen igssen gsisen sgisen isgsen sigsen gssien sgsien gssien sgsien ssgien ssgien issgen sisgen issgen sisgen ssigen ssigen eissgn iessgn esisgn seisgn isesgn siesgn eissgn iessgn esisgn seisgn isesgn siesgn essign sesign essign sesign sseign sseign issegn sisegn issegn sisegn ssiegn ssiegn neissg enissg niessg inessg einssg ienssg nesisg ensisg nseisg sneisg esnisg senisg nisesg insesg nsiesg sniesg isnesg sinesg eisnsg iesnsg esinsg seinsg isensg siensg neissg enissg niessg inessg einssg ienssg nesisg ensisg nseisg sneisg esnisg senisg nisesg insesg nsiesg sniesg isnesg sinesg eisnsg iesnsg esinsg seinsg isensg siensg nessig enssig nsesig snesig esnsig sensig nessig enssig nsesig snesig esnsig sensig nsseig snseig nsseig snseig ssneig ssneig essnig sesnig essnig sesnig ssenig ssenig nisseg insseg nsiseg sniseg isnseg sinseg nisseg insseg nsiseg sniseg isnseg sinseg nssieg snsieg nssieg snsieg ssnieg ssnieg issneg sisneg issneg sisneg ssineg ssineg eissng iessng esisng seisng isesng siesng eissng iessng esisng seisng isesng siesng essing sesing essing sesing sseing sseing isseng siseng isseng siseng ssieng ssieng
Note: these 'words' (valid or invalid) are all the permutations of the word gneiss. These words are obtained by scrambling the letters in gneiss.