SUMMARY
?????????? ?????????? ???????????????? ???????????? ????-2 ???????? ?????? (???2??) ??? ????????????? ??????? ??????????????, ??? ??????????? ? ??????? ????????????? ???????????? ????-2 ???????? ???????? ?????? (??2???). ?????????? ??2???, ??? ? ????????? ??????? ???2??, ?? ??? ?????????? ???????? ????????? ??2???. ??, ? ???? ?????, ???????? ???????? ????????? ???2??, ??? ??? ?? ?????? ?????? ???????????? ???????, ??? ??2???.