dough odugh duogh udogh oudgh uodgh doguh odguh dgouh gdouh ogduh goduh dugoh udgoh dguoh gduoh ugdoh gudoh ougdh uogdh ogudh goudh ugodh guodh douhg oduhg duohg udohg oudhg uodhg dohug odhug dhoug hdoug ohdug hodug duhog udhog dhuog hduog uhdog hudog ouhdg uohdg ohudg houdg uhodg huodg doghu odghu dgohu gdohu ogdhu godhu dohgu odhgu dhogu hdogu ohdgu hodgu dghou gdhou dhgou hdgou ghdou hgdou oghdu gohdu ohgdu hogdu ghodu hgodu dugho udgho dguho gduho ugdho gudho duhgo udhgo dhugo hdugo uhdgo hudgo dghuo gdhuo dhguo hdguo ghduo hgduo ughdo guhdo uhgdo hugdo ghudo hgudo oughd uoghd oguhd gouhd ugohd guohd ouhgd uohgd ohugd hougd uhogd huogd oghud gohud ohgud hogud ghoud hgoud ughod guhod uhgod hugod ghuod hguod
Note: these 'words' (valid or invalid) are all the permutations of the word dough. These words are obtained by scrambling the letters in dough.