 20
                            
                                        20              
                            
                            
                     
                                                 8
                            
                                        8               
                            
                            
                     
                                                 20
                            
                                        20              
                            
                            
                     
                                                 7
                            
                                        7               
                            
                            
                     
                                                 20
                            
                                        20              
                            
                            
                     
                                                 20              
                            
                                        3D ture
                            
                                        20              
                            
                                        3D ture
                            
                     
                                                 20
                            
                                        20              
                            
                            
                     
                                                 23
                            
                                        23              
                            
                            
                     
                                                 20
                            
                                        20              
                            
                            
                     
                                                 20
                            
                                        20              
                            
                            
                     
                                                 18              
                            
                                        3D ture
                            
                                        18              
                            
                                        3D ture
                            
                    