12              
                            
                                        3D ture
                            
                    
                            
                                        9               
                            
                            
                    
                            
                                        9               
                            
                            
                    
                            
                                        10              
                            
                            
                    
                            
                                        14              
                            
                                        3D ture
                            
                    
                            
                                        12              
                            
                            
                    
                            
                                        19              
                            
                            
                    
                            
                                        19