| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | prevent they [prep] | 198 |
|
| 2 | [was/were] prevent [prep] | 104 |
|
| 3 | [was/were] they [prep] | 83 |
|
| 4 | [was/were] prevent they | 5 |
|
