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???????? ?????? ???? ????????? ????? ??????? ??????? ????????? ?? ??? ???? ???????? ???? ??????????? ???? ????????? (HEC) ?????? ???? ??, ?? ??? ??????? ???????? ??????????? ?? ??? ?? ??????? ?????? ????? ??? ???? ??? ????? ?? ???? ????? ?????? ?? ???, ???????? ?????? ???? ????????? ????? ??????? ?? HEC ???????, ????, ?????, ???????????????? ?? ??????? ??????? ???? ???????? ??? ????? ?? ??? ?? ????? ?????? ??? ????? HEC ?????? ???? ?? ???? ???? ????? ??? ???? ???????? ????????? ?? ??? ???? ???? ??, ?? ????? ????????? ?? ??????? ????? ???? ???? ??? ?????? ???? ??? ??? ??????? ?????????? ??? ????? ???? ????, ?????? ????, ????????? ?? ??????????? ?? ??? ??? ?????? ??? ?? ????? ???? ???? ??? ????? HEC ?????? ????, ????????, ?????? ???? ?? ????????? ?????? ??????? ???? ??????? ???????? ?? ????? ???????? ??? ????? ?? ???? ??? ???????? ?? ?????? ?? ????? ??????????? ?? ???, ???????? ?????? ???? ????????? ????? ??????? ??? HEC ?????? ?????? ???? ?? ?? ?????? ?????? ?? ???????? ?? ?????????? ?? ???? ???? ???? ???? ??????? ??????? ??? ??????????? ?????? ?? ??? ?? ????? ??? ????? ???? ?? ??? ??????? ????????? ??? ????? ???? ???, ????? HEC ?????? ??????? ???????? ?????????? ?? ??? ?? ????????? ?????? ???