Detailed Notes on ???? ????? ?? ?????? ???? ????? ??????? ?????? ???????? ?????? ??????? ??? ????????? ????? ????? ???? ?????? ???? ???? ??? ????? ??????? ???????? ??????????? ??? ?????? ?????? ????? ???? ?????.?? ??? ????? ?? ??????? ?????? ????? ??????? ???? ???????? ???? ??????? ?? ?????? ????? ??? ????.????? ?? ????? ????? ?????? ???????? ????