| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] as to ensure [art] | 9 |
|
| 2 | so as to ensure [art] | 9 |
|
| 3 | so as to ensure [art] | 9 |
|
| 4 | [adv] as to ensure the | 5 |
|
