| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | so as [verb] that | 33 |
|
| 2 | so as [to-vb] that | 33 |
|
| 3 | [adv] as to ensure that | 23 |
|
| 4 | so [conj] to ensure that | 21 |
|
| 5 | so as to ensure [conj] | 21 |
|
| 6 | so [subord] to ensure that | 21 |
|
| 7 | so as to ensure that | 21 |
|
| 8 | so as ensure that | 21 |
|
