| group | level | studying | browsing | both |
|---|---|---|---|---|
| Novice | 25k - 16k | list | list | list |
| Beginner | 15k - 6k | list | list | list |
| Competent | 5k - 1k | list | list | list |
| Proficient | 1d - 4d | list | list | list |
| Expert | 4d - 6d | list | list | list |
| Professional | 1p - 9p | list | list | list |
| All levels | 25k - 9p | list | list | list |