| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] [pron] could [verb] | 2957 |
|
| 2 | [coord] what [vb mod] [verb] | 167 |
|
| 3 | [coord] what [modal v] [verb] | 167 |
|
| 4 | [coord] what could [verb] | 8 |
|
| 5 | [conj] what could [verb] | 8 |
|
