19              
                            
                                        3D ture
                            
                    
                            
                                        24              
                            
                            
                    
                            
                                        17              
                            
                                        3D ture
                            
                    
                            
                                        20              
                            
                            
                    
                            
                                        10              
                            
                            
                    
                            
                                        18