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