| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [adv] ensure that | 83 |
|
| 2 | it [vb mod] ensure that | 35 |
|
| 3 | it [adv] ensure that | 23 |
|
| 4 | it [vb mod] [adv] ensure | 13 |
|
