| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] so [adv] | 541 |
|
| 2 | [to-vb] [adv] when | 532 |
|
| 3 | so [adv] when | 100 |
|
| 4 | [to-vb] so when | 26 |
|
