????? ????? 97??????????? ??? ??? ??? ??. ????? 25? ????????? ??? ??? ????? ????? 3?1(6―15,15―6,15―9,15―12)? ???? ??? ??? ???. ????? ????? 1??? ?? ???? 2??? ???? ??? ? ?? ? ??? ?? 3?1(7―15,15―0,15―13,15―8)? ???, ??? ????. ?? ??? ?????? ????? ???? 3?1(10―15,15―2,15―8,15―2)? ??? ??? ????.