| | | | ︹ 2020 ︺ 3 | | | | | | | | | | | | | | | 2020 12 14 | | | | | | | | | | | | | | | | | | | | ︹ 2020 ︺6 | | | | | | | | | | | | | | | | | | | | | | | | | | | 1 | | | | | | | | | | | | | | | | | | | | | | | | | 2020 12 2021 4 | | 2020 12 2021 1 | | 22 67 | | | | | | | | | | | | | | | | | | | | | | | 2021 1 | — 3 20 | | | 18 | | | 1000 500 | 25 40 500 | 15 — 25 | | 50% | 50% | | | | | | | | | | 5—7 | | | | | | | | | | | | | | | | | | | | | | | | 1 2 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 55 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2020 12 14 |