| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [subord] [art] | 31877 |
|
| 2 | [adv] to prevent [art] | 84 |
|
| 3 | [adv] [subord] to prevent | 30 |
|
| 4 | [subord] to prevent [art] | 11 |
|
