| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | ensure that [art] [noun] | 2006 |
|
| 2 | that [art] [adj -est] [noun] | 724 |
|
| 3 | ensure [art] [adj -est] [noun] | 31 |
|
| 4 | ensure that [art] [adj -est] | 23 |
|
