# # # .. #..#. # . . .# . # # #. . # .. .#.. .... # .. #.#. . . ..# #. .###. #.#.##.. .. #.#..# #...... #... . .#.## # ...#. .. . # .##.. #. #..#.# .....# # .#... .. ###..... ...#. # ##.....#....##....# ####.. #...#. #... ..# .# . # ... ###.... ####.### ..# §§ .##... .#..# # . . .. # #. ..# ### #. #....# #..#.###..#.# # ......# .#.. ...#. .# #.. #.##.##...#.# ## ∆( ...#...#....# .#.# ∆$.. .# #... .#.. . # #....#.##..##. #.# #..##### . #.# #.##### #. # #.X1..# # #.##### ...# #..... ∆ #####. ## ∆