| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [adv] [art] | 22737 |
|
| 2 | [adv] to ensure [art] | 59 |
|
| 3 | [adv] [adv] to ensure | 46 |
|
| 4 | [adv] to ensure [art] | 44 |
|
