| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] we could [verb] | 1154 |
|
| 2 | before [pron] could [verb] | 1078 |
|
| 3 | before we [modal v] [verb] | 162 |
|
| 4 | before we [vb mod] [verb] | 162 |
|
| 5 | before we could [verb] | 48 |
|
