| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [adv] [conj] [conj] | 242 |
|
| 2 | [adv] [conj] to ensure [conj] | 29 |
|
| 3 | [vb pp] [adv] to ensure [conj] | 17 |
|
| 4 | [vb pp] [adv] [conj] to ensure | 8 |
|
| 5 | [vb pp] [conj] to ensure [conj] | 5 |
|
