| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | prevent [pron] from [v-ing] | 695 |
|
| 2 | not prevent [pron] from | 62 |
|
| 3 | not prevent [pron] [v-ing] | 20 |
|
| 4 | not prevent from [v-ing] | 10 |
|
