| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | so [conj] [verb] [art] | 667 |
|
| 2 | so [conj] [to-vb] [art] | 594 |
|
| 3 | so [conj] ensure [art] | 9 |
|
| 4 | so [conj] to ensure [art] | 9 |
|
| 5 | [adv] [conj] to ensure [art] | 9 |
|
| 6 | [adv] [conj] to ensure [art] | 9 |
|
