| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 94231 |
97.7%
|
| 2 | Some difficulty | 1719 |
1.8%
|
| 3 | A lot of difficulty | 246 |
0.3%
|
| 4 | Cannot do at all | 256 |
0.3%
|