| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | ensure that [adv] [adv] [conj] [adj] | 7 |
|
| 2 | ensure that [adv] [adv] [conj] possible | 6 |
|
| 3 | ensure that [adv] [adv] [conj] possible | 6 |
|
| 4 | ensure that [adv] [adv] [conj] [adj] | 6 |
|
