| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] [verb] they [prep] [verb] | 105 |
|
| 2 | [coord] prevent [pron] [prep] [verb] | 44 |
|
| 3 | [conj] prevent they [prep] [verb] | 18 |
|
| 4 | [coord] prevent they [prep] [verb] | 10 |
|
