| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] they could [verb] [pron] | 61 |
|
| 2 | [Wh pn] [verb] they [verb] [pron] | 37 |
|
| 3 | [Wh pn] [verb] they could [verb] | 9 |
|
