| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could [verb] i | 519 |
|
| 2 | [Wh pn] could [verb] [pron] | 258 |
|
| 3 | [Wh pn] [vb mod] [verb] i | 125 |
|
| 4 | [Wh pn] [modal v] [verb] i | 125 |
|
| 5 | [Wh pn] could [verb] i | 14 |
|
