..# ∆ #.# ∆ #.# #.## . ... ∆ ... #.# ....####.# ...[....># .####...# #.#.# ###'### #.....# #####'#.### +.....+.# #..<..#.# ∆ #..>..#+# #..W..# ∆ #.....+ ####### ∆ ∆