| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [adj] work is required | 5 |
|
| 2 | [adj] [adj] work is required | 5 |
|
| 3 | [adj] work is required [verb] | 9 |
|
| 4 | [adj] work is required [to-vb] | 9 |
|
