| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] prevent it from [verb] | 6 |
|
| 2 | not prevent it from [verb] | 6 |
|
| 3 | [not/n't] prevent it from [verb] | 6 |
|
| 4 | [modal v] prevent it from [verb] | 5 |
|
| 5 | [vb mod] prevent it from [verb] | 5 |
|
