1, the main points of the paper are graded by serial number.

2. The first layer is Chinese numerals and pause symbols.

3. The second layer contains Chinese characters and numbers in brackets.

4. The third layer is Arabic numerals plus waste points.

5. The fourth layer contains Arabic numerals in brackets.

6. The fifth floor is circled with Arabic numerals.

7. The sixth floor is capitalized English letters.

8. The seventh floor is lowercase English letters.

9. So 1234 can appear in the paper.