| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [conj] [conj] [art] | 820 |
|
| 2 | [adv] to ensure [conj] [art] | 74 |
|
| 3 | [conj] to ensure [conj] [art] | 69 |
|
| 4 | [adv] [conj] to ensure [conj] | 30 |
|
| 5 | [adv] [conj] to ensure [art] | 9 |
|
