| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | ensure as far as possible | 12 |
|
| 2 | ensure [adv] far as possible | 12 |
|
| 3 | ensure [adv] far as possible | 12 |
|
| 4 | ensure as far as possible | 12 |
|
| 5 | to ensure [adv] far as possible | 8 |
|
