| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [to-vb] [Wh adv] [pers pn] could | 15 |
|
| 2 | [vb past] [to-vb] [Wh adv] [pron] could | 15 |
|
| 3 | [vb past] [to-vb] how [pron] could | 9 |
|
| 4 | wanted [to-vb] [Wh adv] [pron] could | 6 |
|
| 5 | [vb past] [to-vb] [Wh adv] he could | 6 |
|
| 6 | [vb past] [to-vb] [Wh adv] he could | 6 |
|
