# # # x .# .# ... .# # #.. . # # . . # .... . .## ∆ . .. #. ## # .###.## ..#...# # .##. # #.#.#. . .. . # . Y #.. ###... .#.. #.. #.# . . # .#.#.. #..#. .#..## . .# # . # # .... # ##. ..... )#.. ## ## . # #.##.#... ### ###.. #.#..# ..##..## # .# ... #....## # ..# #.###..#.# # ##.# ##.#.#. ## ..#.. ###..### ...# ## #...## # ..#.##### ### . #. ##.##.. ...# #. #.###....##..##.# ##.#...#..#..###.### .........#.### .##...Y#...# ##.....### #..###.....# ## ..#.#.# ###### #