| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [vb past] could [vb infin] [pron] | 13 |
|
| 2 | [pers pn] [vb past] could [vb infin] [pron] | 12 |
|
| 3 | [pron] [vb past] could [vb infin] [pers pn] | 9 |
|
