???? ????? ???????? ?? ?????? ?????? ???? ???? ??? ??????? ?? ???? ??? ????????. ????? ??? ??????? ??????? ???? ?????? ??? ???????. ????? ??????? ??????? ?????????. ????? ?????? ?????? ?????? ???????. ???? ??????? ??????? ????? ???? ?? ???????? . Picking ???? ????? ??????? ??? looking for ???? ?????? ??? evaluate ??? factors. Begin by,