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