.. ... ........... #.. #.. #..# ..##.. #..##..##..##..##.. ............§ ... ....∩...x... . . #.. #..##..##.. #..##..##..##..##.. ..x................ .......§§.......... #..##.3##..##..##.. # #.. #..##..##. ................ ................. ≈≈≈#.§##3.##..##.. .≈≈≈≈. #..##..##..