| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to ensure [that] [pers pn] [verb] to | 7 |
|
| 2 | to ensure that [pers pn] [verb] to | 7 |
|
| 3 | to ensure [conj] [pers pn] [verb] to | 7 |
|
| 4 | to ensure that [pers pn] [verb] to | 7 |
|
