###                  
         ##..##                
        ##....##               
        #......#         ####  
        #.....##    ######..## 
       ##......### ##..##....##
       #.........###..........#
       #..........#.......∩.∩.#
       #.......##....##.......#
       ##.....####..#####....##
        #......# ####   ##..## 
        ##....##         ####  
 ###     #...##                
##.##   ##..##                 
#...##  #..##                  
#....####..#                   
#..#...#W..#                   
#W.##...W.##                   
##.###...##                    
 #..######                     
 ##..#                         
  #...#                        
  ##...#                       
   ##...#                      
     #...#                     
      #..#                     
       ...                     
       #...