##.#. .... ... ∆ ∆... ∆ #.# #.# #r## ∆ ###..##### #........# #........# #........# #### #........# ∆ ...#### #........# #....###### #........# #.[......## ######........# ###...##...###...##(.......# . ###...#...##..#.#............# ....##....###..###..##.###.[......# #......<..# ##.....###.# #........# #...##...## ####..# #............# #.. ..#### ##.# #..###.......# #.## #.# #..# #.......# # #......# #.......# #.###### #........ #.# #........ ∆ .......