| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] as [adv] | 1233 |
|
| 2 | [modal v] as [adv] | 1233 |
|
| 3 | could [conj] [adv] | 39 |
|
| 4 | could [subord] [adv] | 11 |
|
| 5 | could as [adv] | 10 |
|
| 6 | could as [adv] | 10 |
|
