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