{??? a 3-level ?? ??????????????? ???? to the Fisher-?????????????????????????? |?????1% ???????{??|??|???|??|?????|????{??|??????|????? 1 ???| |????? 1 ?|???? 1 ?|???? 1 ?|???? 1 ?|???? 1 ?|????????????? — ?????????????????????????????? |??? ??????? ????? ???? ????????{??|???|????|????????????????????????? ?? ?????” ????????{???|????|????|????