| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [conj] to ensure | 48 |
|
| 2 | [adv] [subord] to ensure | 42 |
|
| 3 | [adv] as to ensure | 41 |
|
| 4 | [adv] as to ensure | 41 |
|
| 5 | so [conj] to ensure | 39 |
|
| 6 | so [conj] to ensure | 39 |
|
| 7 | [adv] [coord] to ensure | 8 |
|
| 8 | [adv] and to ensure | 6 |
|
| 9 | [adv] and to ensure | 6 |
|
