.# .. ...# ∆ .. ..##..## ∆ .##.#..X.# # .#.....# #.####.#.#..## # . ..........# .# ##....##..##..#.# ##..#.#.x.X......# .##.......##....#.#.# . ...#......###.##.# .. #.#..##.#.#.## .. ..#.###..#.#.. .# ## .#. ..#...#..# .. ..#.....#..#..##### # # #.#.###...#### . #.. ## .## .#####.....# ∆ # ##... ## .##..# . #.. #.#..... .# #...#. ..).#.#.. # # ...... .... #.#..## # .#. ... ##. #.#.... #.. ..#.#.#... .### # #..# ....## . . ##. #.#.#...# . # . # ... . #### . ##.# #..# #. . .. . #. #. #.. # .. . # # # # # . . # . #.