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