| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [vb past] [adj] | 4661 |
|
| 2 | [adj] [vb past] [adj] | 2446 |
|
| 3 | [adj] [verb] difficult | 27 |
|
| 4 | [adj] [vb past] difficult | 7 |
|
