# . . .. . . ..#.. # .# . . . ...# #.# .. . # #.. ...# .# . . # ..# ...##... ... #. ... . ∩ ## . ...# .# ##. #..### .# #..## ##. # # ##...##... #.. .... .#. #.# #.. .##..#..# #..##.#.#.... .# ##..#...... .. .. #. # ..... #.... ... #..#...####.##.# # # ...###...#.#.### # ...#.#...#### ........### #.#..#..#.# .###........## #....##......# . #._...##..## #...#.#...#.# #. #..3...##.. .......$#...#.# ....#..#..##..# .###... #.. .. ..#.. .##. ## ..###. 3# #X. .# . .X #