cuo4, ~{4m~}
   88   8  8    
   8 8  8  8    
  8  8  8  8    
  8   88888888  
 88888  8  8    
8  8    8  8    
   8  888888888 
888888          
   8   888888   
8  8 8 8    8   
 8 88  8    8   
 8 8   888888   
   888 8    8   
8888   8    8   
 8     888888   
       8    8