                                                                                                               ︾                                         ︽                                                                                                                                                    ︵  ︶              ︾         ︶           ︵    ︾      ︽                           ︽                                                                                  ︵  ︶   ︵  ︶         ︾                 ︾    ︽               ︽         ︽     ︾               ︵  ︶                                                                                          ︵  ︶    ︵  ︶   ︵  ︶         ︵  ︶                                                                                                     