 20
                            
                                        20              
                            
                            
                     
                                                 13
                            
                                        13              
                            
                            
                     
                                                 16              
                            
                                        3D ture
                            
                                        16              
                            
                                        3D ture
                            
                     
                                                 20
                            
                                        20              
                            
                            
                     
                                                 16              
                            
                                        3D ture
                            
                                        16              
                            
                                        3D ture
                            
                     
                                                 12
                            
                                        12              
                            
                            
                     
                                                 11
                            
                                        11              
                            
                            
                     
                                                 2
                            
                                        2               
                            
                            
                     
                                                 16
                            
                                        16              
                            
                            
                    