### .. .. .e .. .### +###. ##...###..r## #..e..#.....# ∆∆ #.....#..3..# ∆∆ #.....#..r..# ∆∆ #...§#.e..## #####'##### ##....#....# #.....#.....# #..∩..#.....# #.e...#.....# ###r.r###...## ##.§##'######. #§§Ee##...## .e #§§e§#.....# ##§§##..∩..# ######...## #####