di4,  ~{5X~}
         8      
  8      8      
  8   8  8      
  8   8  8      
  8   8  8  8   
  8   8  88888  
88888 8888  8   
  8  88  8  8   
  8   8  8  8   
  8   8  8  8   
  8   8  88 8   
  8   8  8 8  8 
  888 8  8    8 
888   8       88
 8     88888888