| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] to prevent it [prep] [v-ing] | 15 |
|
| 2 | [noun] to prevent it [prep] [verb] | 15 |
|
| 3 | [noun] to prevent it from [verb] | 15 |
|
| 4 | [noun sg] to prevent it [prep] [verb] | 12 |
|
