| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [adv] to ensure that | 14 |
|
| 2 | be [adv] to ensure [that] | 14 |
|
| 3 | be [adv] to ensure that | 14 |
|
| 4 | is [adv] to ensure [conj] | 6 |
|
