∆∆∆∆∆             
                        
                        
                        
                        
            ##########++
         #+##...........
 ∆∆∆∆ ∆∆∆+.##......#..#.
##########.##...........
#...........'...........
#+#####'#####......#..#.
     #..#..##...........
     +..l..#####'#####++
     ####+###.......#   
            #.......#   
            #.......#   
            #...<...#   
     ∆∆∆∆∆  #.......#   
     ∆∆∆∆∆  #.......#   
            #.......#   
            #########   
                        
                ∆∆∆∆    
                ∆∆∆∆    
                ∆∆∆∆    
                ∆∆∆∆    
                ∆∆∆∆