????:1???????50?:????????

2?????

3?????

4???????

5???????????

2??????????????1?????,????????????????????????,????,????????????????????,????????????????? ???? ??? 2????????1???,?????????????????????,????,????????????????,??? ????? ? 2??1?,?????????????????,??????????????,??????????????,?????????????? ? ????? 2??????????????1???,????,??,???????,????????????? ???? ?????????????? 2??????????1?,????????,??????????,???????,????????????????? ?????????????? ???????? 2?1???,?????????????????????????????,?????,?????????????,????????????????????????????? ?????????????? ??????????????? 2?1????,?????,?,??????????????????,????????????? ????? ???????? 2???1?????,????????????????????,?,???????????????????,???? ?????????????? ?????????????? 2???????????????1????,??????????,??????????????,??????????????????????????????,????????????? ?????????????? ?????????????? 2??????????1????,?????????????,????????,?????????,???????????????? ?????????? ?????????? ?????????:??