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???????????, ????? ??? ???????, ??? ??? ??? ??????? ???? ???????? ???, ?? ? ??????? ?????? ?????????? ???? ???????????? ????? ??. ???????? ?????????? ??????? ? ?????????? ?????? ????????? ????? ??????????? ??. ???????? ????? ???? ?????? ????????????? ??????????-4-P ??? PEP ?????? ??? ??????? ?????? ????. ????????????? ????????????? ??? ??, ??? ????? ?????? ????? ??????????? ???????????? (PRPP) ????? ????????? ?????? ??. PRPP ?? ????????? ?? C ?? ????? 5-???????? ???????? ???? ?????? ???? ??? ??, ??? ???????? ????? 3C ???? ???? ?????? ???? ??? ??. ????? ??????? ????????????? ???????? ?????? ????? ?????? ???? ??. ?? ????? ??????????? ?????? ??? ????????? ??????????? ?????? ??? ???, ????? ??? ??????? ???????? ???? ????? ???? ??? ?? ??. ??????????? ??? ?????? ????? ??????? ??????? ?????????? ??????? ??????? ????????? ??? ??? ????? ??????? ??????? ??? ??? ??, ?? ?????, ?????, ??? ??? ???? ??????? ???? ?????????? ??.

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