| Value | Category | Cases | |
|---|---|---|---|
| 1 | difficult | 14 |
21.9%
|
| 2 | easy | 17 |
26.6%
|
| 3 | neutral | 12 |
18.8%
|
| 4 | verydifficult | 15 |
23.4%
|
| 5 | veryeasy | 6 |
9.4%
|