| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | so [conj] [verb] | 2035 |
|
| 2 | so [conj] [to-vb] | 1565 |
|
| 3 | [adv] [conj] to ensure | 50 |
|
| 4 | so [conj] ensure | 39 |
|
