| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] to ensure that | 45 |
|
| 2 | [subord] to ensure [that] | 45 |
|
| 3 | [subord] to ensure that | 45 |
|
| 4 | as to ensure [conj] | 38 |
|
| 5 | than to ensure [conj] | 5 |
|
