 14
                            
                                        14              
                            
                            
                     
                                                 9
                            
                                        9               
                            
                            
                     
                                                 15
                            
                                        15              
                            
                            
                     
                                                 26              
                            
                                        3D ture
                            
                                        26              
                            
                                        3D ture
                            
                    