| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | prevent [pron] from [v-ing] [verb] | 10 |
|
| 2 | prevent [pers pn] [prep] [v-ing] [verb] | 9 |
|
| 3 | prevent [pron] [prep] [v-ing] [to-vb] | 9 |
|
| 4 | prevent [pron] [prep] [v-ing] [verb] | 5 |
|
