##.#.... # .......##. .. ....# #. . ∆.# #.....#.#. .##.###§..#.#.#. ## ..# ...5#...... #.. #.#....#..# # ..# #...#3.#...## #.##....###..## #....#..##. .## #.X#..#......... #..5.#.##..#### #.###.......### ..# ##..##.§ . .... .#...... #### .#...### ..# ##. ..