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