????:1???????:????

2????????

3?????vx?

4???????

5????????

????6???28?????????? ????????????????????????,??????28????,??

??????,???

???,???27?????????????

?,?????????????4????????????,???????????????????????????????-?????

??????????5???20???,???????????5??19????????????,?????,?????????????50????6??????????????28?????????????,?????6?????????,???2??????????????????????? ???????:??