eeduc eeduc edeuc deeuc edeuc deeuc eeudc eeudc euedc ueedc euedc ueedc eduec deuec eudec uedec dueec udeec eduec deuec eudec uedec dueec udeec eedcu eedcu edecu deecu edecu deecu eecdu eecdu ecedu ceedu ecedu ceedu edceu deceu ecdeu cedeu dceeu cdeeu edceu deceu ecdeu cedeu dceeu cdeeu eeucd eeucd euecd ueecd euecd ueecd eecud eecud eceud ceeud eceud ceeud euced ueced ecued ceued uceed cueed euced ueced ecued ceued uceed cueed educe deuce eudce uedce duece udece edcue decue ecdue cedue dceue cdeue eucde uecde ecude ceude ucede cuede ducee udcee dcuee cduee ucdee cudee educe deuce eudce uedce duece udece edcue decue ecdue cedue dceue cdeue eucde uecde ecude ceude ucede cuede ducee udcee dcuee cduee ucdee cudee
Note: these 'words' (valid or invalid) are all the permutations of the word eeduc. These words are obtained by scrambling the letters in eeduc.