| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [verb] [art] | 24139 |
|
| 2 | [pron] involve [art] | 568 |
|
| 3 | which involve [art] | 276 |
|
| 4 | [Wh det] involve [art] | 276 |
|
