| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [subord] [verb] [pos pn] | 547 |
|
| 2 | [adv] [subord] [to-vb] [pos pn] | 140 |
|
| 3 | [adv] [subord] to prevent [pron] | 6 |
|
| 4 | [adv] [subord] prevent [pos pn] | 5 |
|
| 5 | [adv] [conj] to prevent [pos pn] | 5 |
|
