♣♣   ♣♣    
     .♣♣♣.     
    ♣♣...♣♣    
  ♣♣♣.....♣♣♣  
  ♣...O<....♣  
...♣♣.l.r.♣♣...
    ♣♣...♣♣    
     ♣♣.♣♣     
      ♣.♣      
      ...      
      .⌠.      
      ...