| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] they could [verb] [prep] the | 7 |
|
| 2 | [verb] they could [vb infin] [prep] the | 7 |
|
| 3 | [verb] they could [verb] [prep] the | 7 |
|
| 4 | [vb past] they could [verb] [prep] the | 5 |
|
