.∆ . .#### ∆ .... ∆ #..# #. #..# ##.#####..# ..........# ###...###..# #...†...#..# #.......#..###### #.......#......... #........####### #.....#.## ####..### ######..# ##.......# #.......## #..###### #..###### #.......## ##.......# ######..# ######..# ##.......# #.......## #..###### #..###### #.......## ##.......# #######..# ##..####..# #<........# #........## ##..###### ####