| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] so [adv] | 1988 |
|
| 2 | [vb pp] [adv] but | 402 |
|
| 3 | so [adv] but | 71 |
|
| 4 | [vb pp] so but | 12 |
|
