| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] to ensure that [art] | 65 |
|
| 2 | [adv] to ensure [that] [art] | 65 |
|
| 3 | [adv] to ensure that [art] | 65 |
|
| 4 | [adv] to ensure [conj] the | 59 |
|
| 5 | carefully to ensure [conj] [art] | 6 |
|
| 6 | also to ensure [conj] [art] | 6 |
|
| 7 | enough to ensure [conj] [art] | 6 |
|
