| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] to prevent [pron] [prep] [verb] [pron] | 5 |
|
| 2 | to prevent [pron] [prep] [verb] [pron] [noun] | 9 |
|
| 3 | to prevent [pron] [prep] [verb] [pron] [noun sg] | 7 |
|
