| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to ensure that a [adj] [noun] is | 5 |
|
| 2 | to ensure that a [adj] [noun] is | 5 |
|
| 3 | to ensure that a [noun] is [verb] | 5 |
|
| 4 | to ensure that a [noun] is [vb pp] | 5 |
|
