 8
                            
                                        8               
                            
                            
                     
                                                 29              
                            
                                        3D ture
                            
                                        29              
                            
                                        3D ture
                            
                     
                                                 16              
                            
                                        3D ture
                            
                                        16              
                            
                                        3D ture
                            
                    