udals duals uadls audls dauls aduls udlas dulas uldas ludas dluas lduas ualds aulds ulads luads aluds lauds dalus adlus dlaus ldaus aldus ladus udasl duasl uadsl audsl dausl adusl udsal dusal usdal sudal dsual sdual uasdl ausdl usadl suadl asudl saudl dasul adsul dsaul sdaul asdul sadul udlsa dulsa uldsa ludsa dlusa ldusa udsla dusla usdla sudla dsula sdula ulsda lusda uslda sulda lsuda sluda dlsua ldsua dslua sdlua lsdua sldua ualsd aulsd ulasd luasd alusd lausd uasld ausld usald suald asuld sauld ulsad lusad uslad sulad lsuad sluad alsud lasud aslud salud lsaud slaud dalsu adlsu dlasu ldasu aldsu ladsu daslu adslu dsalu sdalu asdlu sadlu dlsau ldsau dslau sdlau lsdau sldau alsdu lasdu asldu saldu lsadu sladu
Note: these 'words' (valid or invalid) are all the permutations of the word udals. These words are obtained by scrambling the letters in udals.