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