?? ????????????4?
????:1?????????????:?????
2???????
3?????????
4??????????
5???????
?12???18???????????????(????? ?????????? ?????)12??17??,??,???????????????21??,????????????????,???????????(????????),??,??????????????4???
11???????????????15?,???????????????,????? ????????????????????????????? ???????????????????,??????????????????????????????????????????????????????????????????????????????12??,?????????????24??????????????????????????????(?????????????????)?????????
?,?,????????????,???,??,???????????????????????????????
??,?240??????????,??;?????????,???(??)
??:??