 4
                            
                                        4               
                            
                            
                     
                                                 10              
                            
                                        3D ture
                            
                                        10              
                            
                                        3D ture
                            
                     
                                                 12              
                            
                                        3D ture
                            
                                        12              
                            
                                        3D ture
                            
                     
                                                 5
                            
                                        5               
                            
                            
                     
                                                 2
                            
                                        2               
                            
                            
                     
                                                 1
                            
                                        1               
                            
                            
                    