| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | ensure that [art] correct [noun] be | 11 |
|
| 2 | ensure that [art] correct [noun] [be] | 11 |
|
| 3 | ensure that [art] correct [noun] are | 5 |
|
| 4 | ensure that [art] correct [noun] [am/are] | 5 |
|
