ѷα 1. 3, 2, 1 ̿ Ŀ ̶ ̸ ͵ ù ϸ ȥڼ ȵ ̻ ǰ ó Ÿ̹ ؼ ٴ ΰ ƽ 2. ϴ´ٴ ¦ 뼭 ȸź¼ ڶ ڶ ־ å Ÿ ϴ´ٴ ǰ ȭ ް ; ﺸ Ⱦ 3. ӹ Ȱ å ̺ ϰ ; ž ʾ ϵ ̺ ӹ ð μ ̴ ͵ ̺ ʹ ȣȣ 츮 н Ӱ ȸϰ 鸮 µ Ծ 4. 츮 Ҿ ︸ ϴ ͵ ¦ ôٸ ؼ ˾Ҵٸ ͳ ð ð ϰ ϸ λ ͵ ȸǴ ൿ ߴٸ Ȥó ϴ Һ ĵ 츮 ȥ