u.........      
          ........#      
          ........#      
           .....#<#      
            #uu...####   
            #.uu.....    
         ∆∆∆###...#      
            #.....#   #  
           ##.....###.##.
           #....#u.......
           #....#.....#..
           #....#.Z...#  
           #....#.....#  
           ######..##.#  
                ##.# .#  
                  ..  #  
                  ...    
                  ...    
                  ....