20? ??????? ??? ??? ????? ?????? ???? ??? ???? 1?2? ??. 2??.
???? 1? ?? ????? ???? ????? ? 4? ?????? ???? 2?0?? ???. ???? 7? ?????? 3??? ??? ?? 2??? ?? 1?? ???? ? ???.
???2―1? ? ?
(11?7?)(8?9?)
?:????(??·1?2?) ?:???(??·1?3?)
???? 1? ?? ????? ???? ????? ? 4? ?????? ???? 2?0?? ???. ???? 7? ?????? 3??? ??? ?? 2??? ?? 1?? ???? ? ???.
???2―1? ? ?
(11?7?)(8?9?)
?:????(??·1?2?) ?:???(??·1?3?)