=,2

X*#*







						.																																																																				0				

X*																																																															0																																														.																																																																																																																			0				

X*#*








																		.																																																																											0				

X*#*








																		.																																																																				0																																														.																																																								0																																														.																																																																							0																																														.																																																								0																																														.																																																																			0																																																	

z