 2
						2
											 6
						6
										| 
 | 
 2
							2
													 1
							1
													 3
							3
												
					 1
							1
												
					 1
							1
												
					 1
							1
												
					 1
							1
												
					 1
							1
												
					 1
							1
												
					 1
							1
												
					 
															 
															 
															 
															