| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [prep] [verb] [prep] [noun] | 279 |
|
| 2 | to prevent [pron] [prep] [verb] [prep] | 23 |
|
| 3 | to prevent [pron] [prep] [verb] [noun] | 17 |
|
| 4 | to prevent [pron] [verb] [prep] [noun] | 8 |
|
