The document lists a series of numbers from one to twenty in pairs over four lines, with the numbers paired up in ascending order except for the pairs in the middle two lines which are reversed.

1. One Two

2. Three Four

3. Five Six

4. Seven Eight

5. Nine Ten

6. Eleven Twelve 11 12

7. Thirteen Fourteen 14 13

8. Fifteen Sixteen 15 16

9. Seventeen Eighteen 17 18

10. Nineteen Twenty 19 20