| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | so [subord] to prevent [adj] | 5 |
|
| 2 | [adv] as to prevent [adj] | 5 |
|
| 3 | [adv] [subord] to prevent [adj] | 5 |
|
| 4 | so [subord] to prevent [adj] | 5 |
|
