| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very simple | 9 |
50%
|
| 2 | Simple | 7 |
38.9%
|
| 3 | Neither simple nor difficult | 2 |
11.1%
|
| 4 | Difficult | 0 |
0%
|
| 5 | Very difficult | 0 |
0%
|
| 8 | Don't know | 0 |
0%
|