| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] [noun] [verb] [conj] [art] | 49 |
|
| 2 | [vb infin] [noun] [to-vb] [conj] [art] | 33 |
|
| 3 | [verb] [noun] to ensure [conj] [art] | 33 |
|
| 4 | [vb infin] [noun] ensure [conj] [art] | 8 |
|
