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