?? ?????????

????:1???????:???????
2?????????????
3??????????
4???????v
5?????11?????
2?????21?,??????????????(?)????????????? ? ???
2?????21?,???????????? ?????????? ???????????????
2?21?,?(?)????? ? ?????
2?????????????21?,??? ????? ???
2???????????21?,??? ????? ???
2?21?,????? ? ???
2?????21??????????????????????,???(?)????????????? ? ?
2?????21?,????????? ? ???
????:??????