| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [prep] | 9758 |
|
| 2 | we could [vb infin] | 4289 |
|
| 3 | we [vb infin] [prep] | 1754 |
|
| 4 | we could [prep] | 77 |
|
