)..      
                    ...      
                    ...      
                    #..      
                   ##.#      
                   #..##   .#
                   #...##..# 
                   #.......# 
                   #..#      
                  ##..#      
                  #...#      
                  #..##      
                 ##...#      
                 #.4.##      
                ##..##       
                #....##      
               ##.....##     
  ####         #.......#     
 ##..######    ##......#     
##....##..## ###.......#     
#..........###.........##    
#.∩.∩.......#...........#    
#.......##....##........#    
##....#####..####.......#    
 ##..##   #### #.......##    
  ####         ####.#.##     
                  #####