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