1. 1.
    +1 -7
    ber
    ···
  2. 2.
    -6
    naaaaaaaberrr.
    ···
  3. 3.
    -6
    naaaaaberrr.
    ···
  4. 4.
    -6
    naber.
    ···
  5. 5.
    -6
    naaaaaberr.
    ···
  6. 6.
    -6
    naaaaabeeerrr.
    ···
  7. 7.
    -5
    naaaaaberrrrr.
    ···
  8. 8.
    -4
    naaaabeerrr.
    ···
  9. 9.
    -3
    naaaber
    ···
  10. 10.
    -4
    naaaberr
    ···
  11. 11.
    -3
    naber.
    ···
  12. 12.
    -3
    naberrr.
    ···
  13. 13.
    -4
    naaaaaaaaaaaaaaaaaaaaaaber.
    ···
  14. 14.
    -2
    naaberrr.
    ···
  15. 15.
    -2
    naaaberrrrrrrr.
    ···
  16. 16.
    -2
    naber
    ···
  17. 17.
    -3
    naaaaaaaaaber
    ···
  18. 18.
    -1
    naberrrrr
    ···
  19. 19.
    -1
    naaaabbeeeeerrrrrrr
    ···
  20. 20.
    0
    naaaabbberr
    ···