♣♣♣♣♣     
     ♣♣∩∩∩♣♣    
     .∩...∩     
    ♣♣.... ♣♣  .
    ♣∩.♣.♣ ∩♣♣..
    ♣∩.♣<♣..... 
    ♣∩.♣.♣.∩♣   
    ♣......♣    
.....♣∩...∩♣    
...  ♣♣∩∩∩♣♣    
.     ♣♣♣♣♣