| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [conj] [art] | 41340 |
|
| 2 | to ensure [conj] [art] | 1470 |
|
| 3 | [adv] to ensure [conj] | 173 |
|
| 4 | [adv] to ensure [art] | 44 |
|
