| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to prevent [pron] [prep] [verb] [pron] | 18 |
|
| 2 | to prevent [pron] from [verb] [pron] | 18 |
|
| 3 | to prevent [pron] [prep] [v-ing] [pron] | 18 |
|
| 4 | to prevent [pron] from [verb] [pron] | 18 |
|
| 5 | to prevent [pers pn] [prep] [verb] [pron] | 15 |
|
| 6 | to prevent [pron] [prep] [verb] [pos pn] | 9 |
|
| 7 | to prevent [pron] [prep] [verb] [pers pn] | 6 |
|
| 8 | to prevent he [prep] [verb] [pron] | 5 |
|
| 9 | to prevent him [prep] [verb] [pron] | 5 |
|
