| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] [verb] [noun] | 2316 |
|
| 2 | be [verb] ensure [noun] | 52 |
|
| 3 | [be] [verb] ensure [noun] | 52 |
|
| 4 | [is] [verb] ensure [noun] | 11 |
|
