| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when [pers pn] could [adv] [vb infin] [noun sg] | 7 |
|
| 2 | when [pron] could [adv] [vb infin] [noun sg] | 7 |
|
| 3 | when [pron] could [adv] [vb infin] [noun sg] | 7 |
|
