.##.#           
       ..#.###         
     # #......       # 
      .##...#. ##   .# 
      #.......#.###.#  
   ####.#..#.#.#...#.##
  #..#..#..##..........
 .............1..# .#  
 ...............## #   
. #.................   
..# .....#......###.#  
................####   
 ..................#   
................##.#   
.... ............#     
... ....... .. .#.#    
.............. ..#..   
.##......## .....# .   
.... ....# .....##     
 ..∩.......... .       
...... .........#      
...... ....  ...       
... ........