nilgai inlgai nligai lnigai ilngai lingai niglai inglai ngilai gnilai ignlai ginlai nlgiai lngiai ngliai gnliai lgniai glniai ilgnai lignai iglnai gilnai lginai glinai nilagi inlagi nliagi lniagi ilnagi linagi nialgi inalgi nailgi anilgi ianlgi ainlgi nlaigi lnaigi naligi anligi lanigi alnigi ilangi liangi ialngi ailngi laingi alingi nigali ingali ngiali gniali ignali ginali niagli inagli naigli anigli iangli aingli ngaili gnaili nagili angili ganili agnili iganli gianli iagnli aignli gainli aginli nlgaii lngaii nglaii gnlaii lgnaii glnaii nlagii lnagii nalgii anlgii langii alngii ngalii gnalii naglii anglii ganlii agnlii lganii glanii lagnii algnii galnii aglnii ilgani ligani iglani gilani lgiani gliani ilagni liagni ialgni ailgni laigni aligni igalni gialni iaglni aiglni gailni agilni lgaini glaini lagini algini galini aglini nilgia inlgia nligia lnigia ilngia lingia niglia inglia ngilia gnilia ignlia ginlia nlgiia lngiia ngliia gnliia lgniia glniia ilgnia lignia iglnia gilnia lginia glinia niliga inliga nliiga lniiga ilniga liniga niilga inilga niilga inilga iinlga iinlga nliiga lniiga niliga inliga liniga ilniga ilinga liinga iilnga iilnga liinga ilinga nigila ingila ngiila gniila ignila ginila niigla inigla niigla inigla iingla iingla ngiila gniila nigila ingila ginila ignila iginla giinla iignla iignla giinla iginla nlgiia lngiia ngliia gnliia lgniia glniia nligia lnigia nilgia inlgia lingia ilngia ngilia gnilia niglia inglia ginlia ignlia lginia glinia lignia ilgnia gilnia iglnia ilgina ligina iglina gilina lgiina gliina iligna liigna iilgna iilgna liigna iligna igilna giilna iiglna iiglna giilna igilna lgiina gliina ligina ilgina gilina iglina nilaig inlaig nliaig lniaig ilnaig linaig nialig inalig nailig anilig ianlig ainlig nlaiig lnaiig naliig anliig laniig alniig ilanig lianig ialnig ailnig lainig alinig niliag inliag nliiag lniiag ilniag liniag niilag inilag niilag inilag iinlag iinlag nliiag lniiag niliag inliag liniag ilniag ilinag liinag iilnag iilnag liinag ilinag niailg inailg naiilg aniilg ianilg ainilg niialg inialg niialg inialg iinalg iinalg naiilg aniilg niailg inailg ainilg ianilg iainlg aiinlg iianlg iianlg aiinlg iainlg nlaiig lnaiig naliig anliig laniig alniig nliaig lniaig nilaig inlaig linaig ilnaig nailig anilig nialig inalig ainlig ianlig lainig alinig lianig ilanig ailnig ialnig ilaing liaing ialing ailing laiing aliing iliang liiang iilang iilang liiang iliang iailng aiilng iialng iialng aiilng iailng laiing aliing liaing ilaing ailing ialing nigail ingail ngiail gniail ignail ginail niagil inagil naigil anigil iangil aingil ngaiil gnaiil nagiil angiil ganiil agniil iganil gianil iagnil aignil gainil aginil nigial ingial ngiial gniial ignial ginial niigal inigal niigal inigal iingal iingal ngiial gniial nigial ingial ginial ignial iginal giinal iignal iignal giinal iginal niaigl inaigl naiigl aniigl ianigl ainigl niiagl iniagl niiagl iniagl iinagl iinagl naiigl aniigl niaigl inaigl ainigl ianigl iaingl aiingl iiangl iiangl aiingl iaingl ngaiil gnaiil nagiil angiil ganiil agniil ngiail gniail nigail ingail ginail ignail naigil anigil niagil inagil aingil iangil gainil aginil gianil iganil aignil iagnil igainl giainl iaginl aiginl gaiinl agiinl igianl giianl iiganl iiganl giianl igianl iaignl aiignl iiagnl iiagnl aiignl iaignl gaiinl agiinl giainl igainl aiginl iaginl nlgaii lngaii nglaii gnlaii lgnaii glnaii nlagii lnagii nalgii anlgii langii alngii ngalii gnalii naglii anglii ganlii agnlii lganii glanii lagnii algnii galnii aglnii nlgiai lngiai ngliai gnliai lgniai glniai nligai lnigai nilgai inlgai lingai ilngai ngilai gnilai niglai inglai ginlai ignlai lginai glinai lignai ilgnai gilnai iglnai nlaigi lnaigi naligi anligi lanigi alnigi nliagi lniagi nilagi inlagi linagi ilnagi nailgi anilgi nialgi inalgi ainlgi ianlgi laingi alingi liangi ilangi ailngi ialngi ngaili gnaili nagili angili ganili agnili ngiali gniali nigali ingali ginali ignali naigli anigli niagli inagli aingli iangli gainli aginli gianli iganli aignli iagnli lgaini glaini lagini algini galini aglini lgiani gliani ligani ilgani gilani iglani laigni aligni liagni ilagni ailgni ialgni gailni agilni gialni igalni aiglni iaglni ilgain ligain iglain gilain lgiain gliain ilagin liagin ialgin ailgin laigin aligin igalin gialin iaglin aiglin gailin agilin lgaiin glaiin lagiin algiin galiin agliin ilgian ligian iglian gilian lgiian gliian iligan liigan iilgan iilgan liigan iligan igilan giilan iiglan iiglan giilan igilan lgiian gliian ligian ilgian gilian iglian ilaign liaign ialign ailign laiign aliign iliagn liiagn iilagn iilagn liiagn iliagn iailgn aiilgn iialgn iialgn aiilgn iailgn laiign aliign liaign ilaign ailign ialign igailn giailn iagiln aigiln gaiiln agiiln igialn giialn iigaln iigaln giialn igialn iaigln aiigln iiagln iiagln aiigln iaigln gaiiln agiiln giailn igailn aigiln iagiln lgaiin glaiin lagiin algiin galiin agliin lgiain gliain ligain ilgain gilain iglain laigin aligin liagin ilagin ailgin ialgin gailin agilin gialin igalin aiglin iaglin
Note: these 'words' (valid or invalid) are all the permutations of the word nilgai. These words are obtained by scrambling the letters in nilgai.