| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] [conj] [noun] | 1358 |
|
| 2 | [verb] to ensure [conj] [noun] | 191 |
|
| 3 | is [verb] to ensure [conj] | 82 |
|
| 4 | is to ensure [conj] [noun] | 42 |
|
| 5 | is [verb] to ensure [noun] | 11 |
|
