???? ????????? ???????? ??????? ??????. ????????????? ?? ???????? ???????? ???? ???? ?????????????????? ????: ????, ??????????? ?? ?????????????iN ???skilled ???????? ??????iN? ????????-????,????(??,??,????,???? ????????????,?????? ???,???? ???,?????????? ???????? ???,?????????, ???? ?????????, ???? ???? ??? ?????????? ???? ?? ??: ??, ??, ???? ???