| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] as [art] | 10063 |
|
| 2 | [adv] to prevent [art] | 84 |
|
| 3 | [adv] as to prevent | 29 |
|
| 4 | as to prevent [art] | 9 |
|
