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