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