nysdi ynsdi nsydi snydi ysndi syndi nydsi yndsi ndysi dnysi ydnsi dynsi nsdyi sndyi ndsyi dnsyi sdnyi dsnyi ysdni sydni ydsni dysni sdyni dsyni nysid ynsid nsyid snyid ysnid synid nyisd ynisd niysd inysd yinsd iynsd nsiyd sniyd nisyd insyd sinyd isnyd ysind syind yisnd iysnd siynd isynd nydis yndis ndyis dnyis ydnis dynis nyids ynids niyds inyds yinds iynds ndiys dniys nidys indys dinys idnys ydins dyins yidns iydns diyns idyns nsdiy sndiy ndsiy dnsiy sdniy dsniy nsidy snidy nisdy insdy sindy isndy ndisy dnisy nidsy indsy dinsy idnsy sdiny dsiny sidny isdny disny idsny ysdin sydin ydsin dysin sdyin dsyin ysidn syidn yisdn iysdn siydn isydn ydisn dyisn yidsn iydsn diysn idysn sdiyn dsiyn sidyn isdyn disyn idsyn
Note: these 'words' (valid or invalid) are all the permutations of the word nysdi. These words are obtained by scrambling the letters in nysdi.