???? ????? ??????? ?? ?????? ?????? ???? ?????? ??? ??????? ?? ???? ??? ??????. ????? ??? ??????? ??????? ???? ????? ??? ???????. ????? ??????? ??????? ??????????. ????? ?????? ?????? ?????? ?? ??????. ???? ??????? ??????? ????? ????? ?? ???????. Picking ???? ????? ??????? ??? seeking ???? ?????? need to consider ??? aspects. ?????, ???