| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [pers pn] [prep] [verb] | 1093 |
|
| 2 | to prevent [pers pn] [prep] [verb] | 122 |
|
| 3 | [vb past] to prevent [pers pn] [prep] | 8 |
|
| 4 | [vb past] to prevent [pers pn] [verb] | 5 |
|
