| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] [verb] [conj] [art] [noun sg] | 615 |
|
| 2 | [vb infin] [to-vb] [conj] [art] [noun sg] | 279 |
|
| 3 | [verb] to ensure [conj] [art] [noun sg] | 220 |
|
| 4 | [vb infin] to ensure [conj] [art] [noun] | 38 |
|
| 5 | [vb infin] ensure [conj] [art] [noun sg] | 33 |
|
