This document appears to be a series of fractions where the numerator increases by 1 each line while the denominator remains constant at 2. It seems to simply count up in fractional form from 1/2 to 26/2, with the largest fraction being 13.

1. 1/2

2. 2/2

3. 4/2

4. 4/2

5. 5/2

6. 6/2

7. 7/2

8. 8/2

9. 9/2

10. 10/2

11. 11/2

12. 12/2

13. 13/2

14. 14/2

15. 15/2

16. 16/2

17. 17/2

18. 18/2

19. 19/2

20. 20/2

21. 21/26

22. 22/2

23. 23/26

24. 24/2

25. 25/2

26. 26/2