2 : (),,,11 2 , . 2 .

2 3 . .

(1)4 , . . . , , . . . , , .

(2)5 . () , . . . = , . , .

(1)6 :A4 , , , ,

A4 .

(2)7 .

. . .

4

5 2 , .

8

, , . A4 , , .

(1)9 9 (~ ) .

(2)10 . 11http://kin.naver.com/qna/detail.nhn?d1id=13&dirId=130104&docId=86239140&qb=6rOg66y07KSEIO2YhOyVheq4sA==&enc=utf8&section=kin&rank=3&search_sort=0&spq=0&pid=gmIF6loi5UdssuQE4/wsss--143907&sid=Th6jlMOUHk4AAEbzD5shttp://kin.naver.com/qna/detail.nhn?d1id=11&dirId=1114&docId=117410332&qb=6rOg66y07KSEIO2YhOyVheq4sA==&enc=utf8&section=kin&rank=1&search_sort=0&spq=0&pid=gQVTtsoi5TCssbyDhACsss--173975&sid=TfsUm9-t@k0AAGU-MGUhttp://ko.wikipedia.org/wiki/%ED%98%84%EC%95%85%EA%B8%B0