| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [pron] could [vb infin] | 416 |
|
| 2 | [pron] we could [vb infin] | 208 |
|
| 3 | [prep] [pron] we could | 89 |
|
| 4 | [prep] we could [vb infin] | 5 |
|
