| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [vb past] [vb pp] they could | 5 |
|
| 2 | [vb past] [adv] [vb pp] they could | 5 |
|
| 3 | [vb past] [been] [vb pp] they could | 5 |
|
| 4 | [vb past] [be] [vb pp] they could | 5 |
|
| 5 | [vb past] be [vb pp] they could | 5 |
|
| 6 | [vb past] been [vb pp] they could | 5 |
|
| 7 | [vb past] [vb pp] [conj] they could | 19 |
|
| 8 | [vb past] [vb pp] [that] they could | 11 |
|
| 9 | [vb past] [vb pp] that they could | 11 |
|
| 10 | [vb past] [vb pp] that they could | 11 |
|
| 11 | [vb past] [vb pp] [subord] they could | 8 |
|
| 12 | [vb past] [vb pp] [pron] they could | 6 |
|
| 13 | [vb past] [vb pp] they could [vb infin] | 7 |
|
| 14 | [vb past] [vb pp] they could [verb] | 7 |
|
