c                                   
                                       Z         
                                                 
                                                 
                   ∆                             
                                                 
                c.....#                          
      ∆         #.....#                          
                 .....#                          
             .#   ....###                        
       ∆  ....+    .....##                       
           ...#.#.. .....#                       
           ...#.#.# #...>#                       
            ..#.#.###c...#                       
            ..#....##)5..#                       
#############.#.....(....##          5           
#......<......#...........#                      
##.#########..#...........#                      
           #..............#                      
        F  #.#####.....>..#                      
           #.#   #(.......#             pp       
           #.#####........##                     
           #.#[............#    S                
           #.#.###########.#  O  ∆      pa       
           #.             +#                     
                                      ∆          
                                                 
                                                 
                          ∆