3                                     
u                                     
            ∆                         
                                      
                                      
                                      
                                      
                                      
                                      
             ∆                        
x                                     
                                      
                                      
                                 ∆    
                     #                
              ##    .#..#             
              #.####.  .#             
               #........#             
                #§§#....#             
              ###§§#...##             
          #####.##.1....####          
          ................ ..         
          ...#..#.........≈..         
          #.........≈≈........        
          ..#.##.......⌠≈. ...        
          ..   #......≈≈⌠... .        
          .## ..#.........≈≈.         
           # ........≈..≈ ..≈.        
          ..#.........≈≈... ≈.        
          .#....#... .....≈≈..        
          ...####.............∆       
          ###   .. .#≈≈≈≈≈≈#..        
              .. ..### ≈≈≈. #         
              .J...   .###  ..        
             ....    ...     .        
           ∆     #   .#.              
                     . .             ∆