/------------------------------------------------------------------- PK15602.1/4-47  (1)
      |                                                                               
      |------------------------------------------------------------------- PK16855.1/4-44  (10)
      |                                                                               
      |                                                       /----------- PK17569.1/4-34  (2)
      |                     /----------------70---------------+                       
      |                     |                                 \----------- PK08508.1/4-33  (9)
      +                     |                                                         
      |                     |                                 /----------- PK17569.1/52-92 (4)
      |          /----72----+           /---------100---------+                       
      |          |          |           |                     \----------- PK08508.1/52-91 (7)
      |          |          |           |                                             
      |          |          \-----88----+          /---------------------- PK04669.1/54-92 (5)
      |          |                      |          |                                  
      \----55----+                      \----90----+          /----------- PK15602.1/53-94 (6)
                 |                                 \----52----+                       
                 |                                            \----------- PK16855.1/53-95 (8)
                 |                                                                    
                 \-------------------------------------------------------- PK04669.1/4-43  (3)
                                                                                      

      /-------------------------------------------------------------------- PK08508.1 (1)
      |                                                                               
      |-------------------------------------------------------------------- PK17569.1 (3)
      +                                                                               
      |                      /--------------------------------------------- PK04669.1 (2)
      |                      |                                                        
      \----------100---------+                     /----------------------- PK15602.1 (4)
                             \----------95---------+                                  
                                                   \----------------------- PK16855.1 (5)