【   】       
       1                            
      2                          3                                      4                                      5                              6                                                     7                              8                                                                                                             9                       10                                      11                               12                                         13           
                                     14                               15                                                16                                
17                                              18                          19                                      20                                                 21                                 22                              23                       24                      25                                26                        