#####       
               #...#       
               #...#   ### 
        ###### #...#  ...# 
##.######....###...## ...##
........†...........+......
##+######....##.#...#....# 
 ∆      #....##..........# 
        #....###..S....### 
        #....# #...l...#   
        #....# ##...####   
        ###### .......     
              #.......     
    ∆         #........    
              #####....    
                  #....