1 . | | | | | | 2 . | | | 3 . | | 2000 / / | | | | | | | | | 4 . | | | | | 1 | | 2 | | 3 | 4 | 5 | 5 . | | | 2021 | | A B C | A | | | | | | | B | | C | | | 6 . | | | | | | | | | | 7 . | | | 2000 / / | 1000 - 3000 2 - 3 | | 8 . | | | | |