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