| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] ensure that such [noun pl] | 5 |
|
| 2 | be [verb] to ensure that such [noun] | 5 |
|
| 3 | be [vb pp] ensure that such [noun] | 5 |
|
| 4 | be [verb] ensure that such [noun] | 5 |
|
