| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] they could [verb] | 367 |
|
| 2 | think [pron] could [verb] | 352 |
|
| 3 | think they [modal v] [verb] | 220 |
|
| 4 | think they could [verb] | 90 |
|
| 5 | [vb infin] they could [verb] | 33 |
|
