1. 1.
    0
    xdxdxdxxdxdxd
    ···
  2. 2.
    0
    xxdxdxdxd
    ···
  3. 3.
    0
    xdxdxfddxd
    ···
  4. 4.
    0
    xdxdxdxd
    ···
  5. 5.
    0
    xdxdxdxdxd
    ···
  6. 6.
    0
    xdxdxdxdxd
    ···
  7. 7.
    0
    xdxdxxdxddddxxddxdd
    ···
  8. 8.
    0
    xdxdxxdxddddxxddxdd
    ···
  9. 9.
    0
    xdxdxdxdxdxdxdxdxd
    ···
  10. 10.
    0
    xd xd x dxd x dxd xdxd
    ···
  11. 11.
    0
    xdxdxdxdxdxdxdxdxx
    ···
  12. 12.
    0
    xdxdxdxdxdxdxdxdxx xdxdxdxdxdxdxdxdxx
    ···
  13. 13.
    0
    xdxdxdxdxdxdxdxdxx
    ···
  14. 14.
    0
    xd xd xd xd
    ···
  15. 15.
    0
    xdxdxdxdxdxdxdxdxdxdxdxdxdxdxdxdxdxdxdxdxdxdxdxd
    ···
  16. 16.
    0
    xdxdxdxdxdxdxd @5
    ···
  17. 17.
    0
    @6 @7 xdxdxdxdxdxdxdx
    ···
  18. 18.
    0
    xdxdxdxdxdxd
    ···
  19. 19.
    0
    xdxdxdxdxdxdxdxdxdxdxdxd
    ···
  20. 20.
    0
    xdxdxdxdxdxdxdxdxdxdxdxdxdxdxdxdxdxd
    ···