| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] it [verb] | 20864 |
|
| 2 | [to-vb] it [verb] | 2101 |
|
| 3 | to prevent [pron] [verb] | 230 |
|
| 4 | to prevent [pers pn] [verb] | 192 |
|
| 5 | prevent it [verb] | 90 |
|
| 6 | to prevent it [verb] | 55 |
|
