##   
   .#       ..# # 
    ..      .. .# 
#    #.##  #. ..  
.## #.#..##.#.###.
....#.............
##....# ##∩#..#   
.#..## ##..3.#    
......#..§#...#   
..#.....#.§....#  
...##.#...##.###  
.# ...#.### .. .# 
 #...#.#.   ... . 
..##.#.#..  .#..  
...#######.   .#. 
..##      .       
#          .