1. 2101.
    0
    up up up
    ···
  2. 2102.
    0
    up up up
    ···
  3. 2103.
    0
    up up up
    ···
  4. 2104.
    0
    up up up
    ···
  5. 2105.
    0
    up up up
    ···
  6. 2106.
    0
    up up up
    ···
  7. 2107.
    0
    up up up
    ···
  8. 2108.
    0
    up up up
    ···
  9. 2109.
    0
    up up up
    ···
  10. 2110.
    0
    up up up
    ···
  11. 2111.
    0
    up up up
    ···
  12. 2112.
    0
    up up up
    ···
  13. 2113.
    0
    up up up
    ···
  14. 2114.
    0
    up up up
    ···
  15. 2115.
    0
    up up up
    ···
  16. 2116.
    0
    up up up
    ···
  17. 2117.
    0
    up up up
    ···
  18. 2118.
    0
    up up up
    ···
  19. 2119.
    0
    up up up
    ···
  20. 2120.
    0
    up up up
    ···