GIF89a!,턏ڋ| ٵ'j4Q'3o1HHXIJufVK@kjytT5zHr O}l^gsrE$g5&HxWR&u(*ӷyj3`H:+H6ɵا:[H+78CBӵie9 4y\*<(jC]~.Bn$HM/~o <0a! MathType0017 s k =kD+(k-1)a;