| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [vb mod] [vb infin] [pron] | 9 |
|
| 2 | could [verb] would [vb infin] [pron] | 5 |
|
| 3 | could [verb] [vb mod] [vb infin] [pers pn] | 5 |
|
