| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is ensure that [noun] be | 7 |
|
| 2 | is to ensure [that] [noun] be | 7 |
|
| 3 | is ensure [that] [noun pl] be | 5 |
|
| 4 | is ensure [that] [noun] are | 5 |
|
