| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | prevent [pron] [prep] [verb] | 697 |
|
| 2 | [conj] [pron] [prep] [verb] | 99 |
|
| 3 | [conj] prevent [pron] [prep] | 89 |
|
| 4 | [conj] prevent [pron] [verb] | 35 |
|
| 5 | [conj] prevent [prep] [verb] | 15 |
|
