| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] [conj] [art] [noun sg] | 5566 |
|
| 2 | to ensure [conj] [art] [noun sg] | 773 |
|
| 3 | [vb infin] to ensure [conj] [art] | 54 |
|
| 4 | [vb infin] to ensure [conj] [noun sg] | 9 |
|
| 5 | [vb infin] to ensure [art] [noun sg] | 8 |
|
