| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [Wh det] could [vb infin] [pron] | 5 |
|
| 2 | [verb] [Wh det] could [verb] [pron] | 5 |
|
| 3 | [verb] [Wh det] could [pron] [verb] | 6 |
|
| 4 | [verb] [Wh det] could [pron] [vb infin] | 5 |
|
