##########
    #........#
  ###........#
  ...........#
    #........#
    #.....l..#
    ####)#####
      ##.#    
 ∆    #..#    
      #.##    
∆     #.#     
      #<#     
      #.#     
      #.#     
 ∆    ...     
  ∆   ...     
     ....#    
     #.###    
     #.