| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [pers pn] [Wh adv] [pron] [modal v] | 41 |
|
| 2 | [verb] [pers pn] [Wh adv] [pron] could | 30 |
|
| 3 | [vb past] [pers pn] [adv] [pron] could | 27 |
|
| 4 | [vb past] [pron] [Wh adv] [pron] could | 14 |
|
