(1)                                                 (2)                                             (3)  

                    (4)                                               ( 5)                                            (6)

                 (7)                                               (8)                                            (9)

                  (10)                                           (11)                                           (12)

               (13)                                              (14)                                            (15)

                  (16)                                                                                                (17)