| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] or [vb infin] [pron] | 14 |
|
| 2 | could [vb infin] or [verb] [pos pn] | 7 |
|
| 3 | could [vb infin] or [verb] [pers pn] | 6 |
|
