##     
                              #    .
                           #        
        .. ..              .        
         .#..               .#      
      ..## ..#########       .. ..  
      #...#......  . ##   # _.. .   
  ### #... ... ... .#.##  # #.#.#   
   ..#.......#.. .∩###.#### .. .  . 
    #.#.#.....#.#.......#..  ..##   
     #..#####.##.#..  #..# _# ..    
     #..#....#...##..#... .   #.. . 
      #.z..#.####.####..#  .#    .  
.......##...#..  #....... #..       
.#####.#.#z#.# .# ##.#. .#.. #   .  
     .##..###.### #. .# . #.#       
    ## ...   #.#  ..#.. .  .#       
      .#.#    ## .. .#              
     .#..                           
    .# .#