▒▒▒▒▒  
            ....   
            ...▒▒▒▒
            .......
            .....▒ 
▒▒▒▒▒▒▒▒▒▒▒▒...... 
▒..........l..▒    
▒.....▒▒.B▒B▒▒▒.▒  
▒......r..▒.....▒  
▒▒▒▒.▒....▒..▒▒▒▒  
   ▒.▒....▒....    
   ▒.▒.?.l▒.▒▒..▒  
   ▒.▒.<..▒.▒ .... 
   ▒...........▒▒▒▒
   ▒.......▒..▒    
   ▒..▒▒.......    
  ▒...  ...8...    
  ▒...  ..8.8..    
  ▒...  .8._.8.    
  ▒▒▒   ..8.8..