(13)
              (10a)                                           (10b)                                           (11)                                             (12)                                                                                       
  
 
 
 
 
 
 
 
 
 
 
 
                                                                                                                                                                                                                                                                     
 
              (14)                                             (15a)                                             (15b)                                          (16a)                                            (16b)                                       (17a)