| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [pron] could [vb infin] [pron] | 6 |
|
| 2 | [was/were] [pers pn] could [verb] [pron] | 6 |
|
| 3 | [was/were] [pron] could [verb] [pers pn] | 5 |
|
| 4 | was [pron] could [verb] [pron] | 5 |
|
