| Value | Category | Cases | |
|---|---|---|---|
| 1 | Plutôt difficile | 310 |
20.6%
|
| 2 | Plutôt facile | 924 |
61.3%
|
| 3 | nsp | 231 |
15.3%
|
| 9 | nr | 42 |
2.8%
|