##       
      ##.# ##    
    ∆##.###.#    
     #...§.##    
  #...#.§##.###  
  #...#.#3##..## 
  #...#.###....# 
 ..######... .##.
#..     #####....
##       ##.#.#..
         #.#.###≈
         ##.##...
         #.#..#..
          #.#...≈