. .. 
                  .... 
                 #..## 
              ###....  
              #....##  
           ## #.....   
   #.      #.##..#     
   ..#.    #....##     
  #.#... #..#4#..##    
  .  ..... .#.X#..#    
 .......##  #....##    
 ..#...#....##...#     
    .......#...###     
  #..##. .4####. ###. #
    #........##.......#
      . .#.##..##.# ###
     ....# .#...#..    
. ##  ... . .##..##.#  
..#.# ..#... ...#....# 
........#.... .#.#...# 
 .#. ..# .####........ 
... #.. ##..   ..## . .
.  #.. .. . ..  #.  .. 
#..## . #.## ##