nides indes ndies dnies idnes dines nieds ineds neids enids iends einds ndeis dneis nedis endis denis ednis idens diens iedns eidns deins edins nidse indse ndise dnise idnse dinse nisde insde nside snide isnde sinde ndsie dnsie nsdie sndie dsnie sdnie idsne disne isdne sidne dsine sdine niesd inesd neisd enisd iensd einsd nised insed nsied snied isned sined nesid ensid nseid sneid esnid senid iesnd eisnd isend siend esind seind ndesi dnesi nedsi endsi densi ednsi ndsei dnsei nsdei sndei dsnei sdnei nesdi ensdi nsedi snedi esndi sendi desni edsni dseni sdeni esdni sedni idesn diesn iedsn eidsn deisn edisn idsen disen isden siden dsien sdien iesdn eisdn isedn siedn esidn seidn desin edsin dsein sdein esdin sedin
Note: these 'words' (valid or invalid) are all the permutations of the word nides. These words are obtained by scrambling the letters in nides.