feigns efigns fiegns ifegns eifgns iefgns fegins efgins fgeins gfeins egfins gefins figens ifgens fgiens gfiens igfens gifens eigfns iegfns egifns geifns igefns giefns feings efings fiengs ifengs eifngs iefngs fenigs efnigs fneigs nfeigs enfigs nefigs finegs ifnegs fniegs nfiegs infegs nifegs einfgs ienfgs enifgs neifgs inefgs niefgs fegnis efgnis fgenis gfenis egfnis gefnis fengis efngis fnegis nfegis enfgis nefgis fgneis gfneis fngeis nfgeis gnfeis ngfeis egnfis genfis engfis negfis gnefis ngefis fignes ifgnes fgines gfines igfnes gifnes finges ifnges fniges nfiges infges nifges fgnies gfnies fngies nfgies gnfies ngfies ignfes ginfes ingfes nigfes gnifes ngifes eignfs iegnfs eginfs geinfs igenfs gienfs eingfs iengfs enigfs neigfs inegfs niegfs egnifs genifs engifs negifs gneifs ngeifs ignefs ginefs ingefs nigefs gniefs ngiefs feigsn efigsn fiegsn ifegsn eifgsn iefgsn fegisn efgisn fgeisn gfeisn egfisn gefisn figesn ifgesn fgiesn gfiesn igfesn gifesn eigfsn iegfsn egifsn geifsn igefsn giefsn feisgn efisgn fiesgn ifesgn eifsgn iefsgn fesign efsign fseign sfeign esfign sefign fisegn ifsegn fsiegn sfiegn isfegn sifegn eisfgn iesfgn esifgn seifgn isefgn siefgn fegsin efgsin fgesin gfesin egfsin gefsin fesgin efsgin fsegin sfegin esfgin sefgin fgsein gfsein fsgein sfgein gsfein sgfein egsfin gesfin esgfin segfin gsefin sgefin figsen ifgsen fgisen gfisen igfsen gifsen fisgen ifsgen fsigen sfigen isfgen sifgen fgsien gfsien fsgien sfgien gsfien sgfien igsfen gisfen isgfen sigfen gsifen sgifen eigsfn iegsfn egisfn geisfn igesfn giesfn eisgfn iesgfn esigfn seigfn isegfn siegfn egsifn gesifn esgifn segifn gseifn sgeifn igsefn gisefn isgefn sigefn gsiefn sgiefn feinsg efinsg fiensg ifensg eifnsg iefnsg fenisg efnisg fneisg nfeisg enfisg nefisg finesg ifnesg fniesg nfiesg infesg nifesg einfsg ienfsg enifsg neifsg inefsg niefsg feisng efisng fiesng ifesng eifsng iefsng fesing efsing fseing sfeing esfing sefing fiseng ifseng fsieng sfieng isfeng sifeng eisfng iesfng esifng seifng isefng siefng fensig efnsig fnesig nfesig enfsig nefsig fesnig efsnig fsenig sfenig esfnig sefnig fnseig nfseig fsneig sfneig nsfeig snfeig ensfig nesfig esnfig senfig nsefig snefig finseg ifnseg fniseg nfiseg infseg nifseg fisneg ifsneg fsineg sfineg isfneg sifneg fnsieg nfsieg fsnieg sfnieg nsfieg snfieg insfeg nisfeg isnfeg sinfeg nsifeg snifeg einsfg iensfg enisfg neisfg inesfg niesfg eisnfg iesnfg esinfg seinfg isenfg sienfg ensifg nesifg esnifg senifg nseifg sneifg insefg nisefg isnefg sinefg nsiefg sniefg fegnsi efgnsi fgensi gfensi egfnsi gefnsi fengsi efngsi fnegsi nfegsi enfgsi nefgsi fgnesi gfnesi fngesi nfgesi gnfesi ngfesi egnfsi genfsi engfsi negfsi gnefsi ngefsi fegsni efgsni fgesni gfesni egfsni gefsni fesgni efsgni fsegni sfegni esfgni sefgni fgseni gfseni fsgeni sfgeni gsfeni sgfeni egsfni gesfni esgfni segfni gsefni sgefni fensgi efnsgi fnesgi nfesgi enfsgi nefsgi fesngi efsngi fsengi sfengi esfngi sefngi fnsegi nfsegi fsnegi sfnegi nsfegi snfegi ensfgi nesfgi esnfgi senfgi nsefgi snefgi fgnsei gfnsei fngsei nfgsei gnfsei ngfsei fgsnei gfsnei fsgnei sfgnei gsfnei sgfnei fnsgei nfsgei fsngei sfngei nsfgei snfgei gnsfei ngsfei gsnfei sgnfei nsgfei sngfei egnsfi gensfi engsfi negsfi gnesfi ngesfi egsnfi gesnfi esgnfi segnfi gsenfi sgenfi ensgfi nesgfi esngfi sengfi nsegfi snegfi gnsefi ngsefi gsnefi sgnefi nsgefi sngefi fignse ifgnse fginse gfinse igfnse gifnse fingse ifngse fnigse nfigse infgse nifgse fgnise gfnise fngise nfgise gnfise ngfise ignfse ginfse ingfse nigfse gnifse ngifse figsne ifgsne fgisne gfisne igfsne gifsne fisgne ifsgne fsigne sfigne isfgne sifgne fgsine gfsine fsgine sfgine gsfine sgfine igsfne gisfne isgfne sigfne gsifne sgifne finsge ifnsge fnisge nfisge infsge nifsge fisnge ifsnge fsinge sfinge isfnge sifnge fnsige nfsige fsnige sfnige nsfige snfige insfge nisfge isnfge sinfge nsifge snifge fgnsie gfnsie fngsie nfgsie gnfsie ngfsie fgsnie gfsnie fsgnie sfgnie gsfnie sgfnie fnsgie nfsgie fsngie sfngie nsfgie snfgie gnsfie ngsfie gsnfie sgnfie nsgfie sngfie ignsfe ginsfe ingsfe nigsfe gnisfe ngisfe igsnfe gisnfe isgnfe signfe gsinfe sginfe insgfe nisgfe isngfe singfe nsigfe snigfe gnsife ngsife gsnife sgnife nsgife sngife eignsf iegnsf eginsf geinsf igensf giensf eingsf iengsf enigsf neigsf inegsf niegsf egnisf genisf engisf negisf gneisf ngeisf ignesf ginesf ingesf nigesf gniesf ngiesf eigsnf iegsnf egisnf geisnf igesnf giesnf eisgnf iesgnf esignf seignf isegnf siegnf egsinf gesinf esginf seginf gseinf sgeinf igsenf gisenf isgenf sigenf gsienf sgienf einsgf iensgf enisgf neisgf inesgf niesgf eisngf iesngf esingf seingf isengf siengf ensigf nesigf esnigf senigf nseigf sneigf insegf nisegf isnegf sinegf nsiegf sniegf egnsif gensif engsif negsif gnesif ngesif egsnif gesnif esgnif segnif gsenif sgenif ensgif nesgif esngif sengif nsegif snegif gnseif ngseif gsneif sgneif nsgeif sngeif ignsef ginsef ingsef nigsef gnisef ngisef igsnef gisnef isgnef signef gsinef sginef insgef nisgef isngef singef nsigef snigef gnsief ngsief gsnief sgnief nsgief sngief
Note: these 'words' (valid or invalid) are all the permutations of the word feigns. These words are obtained by scrambling the letters in feigns.