. ?# . . # # . . . . . # . .(# ## #. #..... # ## ##.§ .# . # . ..#.# .# .#... § #. .. # . . # .# ..# . # #. # #..#..#.# ##.. # ..##### # # . ..##. .. . . . . .##.# .##.. #.... # ..# .#. .#3##.#.# . . . #.##..# .#.. ## . .#. ###### . ###.# .... . ## ### ##### .. ... .# # . ..##..#.#.###. .#.#.###..## ...# # #.........# .# # . .#. ∆. # #....###.. ... #. # # ####.3.## .#..### #.##.. ###.....# #.#.# #....###≈##....#.# #.. #>...≈X...... . . ##≈.X.##≈##.#... v # #..≈..........#.# #....#≈≈≈.#.>....## #...#..≈≈≈#.v.....# ####...≈≈≈≈..#..... #....##.≈##...# ..##.. #≈.# ..# #.# ..# ≈≈≈≈ #. ..# ≈≈≈