| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | we could [vb infin] | 4226 |
|
| 2 | [verb] we [vb infin] | 2733 |
|
| 3 | [verb] we could | 519 |
|
| 4 | [verb] could [vb infin] | 339 |
|
