.#                          
              .. #                        
              .#.#                        
              .#3                         
        ∆  ###..                          
           #...                           
    ##    ##..#                           
     ..####3#.#                           
##  . #.. .#..#   #.#                     
  .#.   #..#§###....#                     
  #.     ##.#..G..#                       
 ###.# ###.#####.##                       
#..#..##x...#                             
.#...#..G#..                              
#. #...#.##..                             
.# .#.##.# #.#                            
#.#..###.#  #.#                           
#..##....# # ##                           
#.  . ....#                               
. #.... .##                               
#.. .# .##                                
....#.#..#