???? ???? ???????? ?? ?????? ?????? ???? ???? ??? ????? ?? ???? ??? ??????? ??????? . ????? ??? ??????? ??????? ???? ????? ??? ???????. ????? ??????? ??????? ?????????. ????? ?????? ?????? ?????? ?? ???????? ???????. ???? ??????? ??????? ??????? ????? ?? ??????. Picking ???? ????? ??????? ??? ????? ???? ?????? is important consider ???