| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [prep] [verb] [prep] | 1225 |
|
| 2 | prevent [pron] [prep] [verb] | 697 |
|
| 3 | prevent [pron] [verb] [prep] | 82 |
|
| 4 | prevent [prep] [verb] [prep] | 67 |
|
