| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] [verb] [noun] | 9798 |
|
| 2 | could [verb] [noun] | 5154 |
|
| 3 | [Wh pn] could [verb] | 1272 |
|
| 4 | [Wh pn] could [noun] | 5 |
|
