| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] [to-vb] that each | 9 |
|
| 2 | be [vb pp] [verb] that each | 9 |
|
| 3 | be [verb] to ensure that each | 6 |
|
| 4 | be [verb] ensure that each | 6 |
|
