| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [adv] [verb] [art] | 1261 |
|
| 2 | [vb pp] [adv] [to-vb] [art] | 883 |
|
| 3 | [verb] [adv] to ensure [art] | 16 |
|
| 4 | [vb pp] [adv] to ensure [art] | 15 |
|
| 5 | [vb pp] [adv] ensure [art] | 8 |
|
| 6 | [vb pp] [adv] to ensure [art] | 8 |
|
