hough ohugh huogh uhogh ouhgh uohgh hoguh ohguh hgouh ghouh oghuh gohuh hugoh uhgoh hguoh ghuoh ughoh guhoh oughh uoghh oguhh gouhh ugohh guohh houhg ohuhg huohg uhohg ouhhg uohhg hohug ohhug hhoug hhoug ohhug hohug huhog uhhog hhuog hhuog uhhog huhog ouhhg uohhg ohuhg houhg uhohg huohg hoghu ohghu hgohu ghohu oghhu gohhu hohgu ohhgu hhogu hhogu ohhgu hohgu hghou ghhou hhgou hhgou ghhou hghou oghhu gohhu ohghu hoghu ghohu hgohu hugho uhgho hguho ghuho ughho guhho huhgo uhhgo hhugo hhugo uhhgo huhgo hghuo ghhuo hhguo hhguo ghhuo hghuo ughho guhho uhgho hugho ghuho hguho oughh uoghh oguhh gouhh ugohh guohh ouhgh uohgh ohugh hough uhogh huogh oghuh gohuh ohguh hoguh ghouh hgouh ughoh guhoh uhgoh hugoh ghuoh hguoh
Note: these 'words' (valid or invalid) are all the permutations of the word hough. These words are obtained by scrambling the letters in hough.