| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [noun prp] [verb] [pron] could [vb infin] | 6 |
|
| 2 | [Wh det] [noun prp] [verb] [pers pn] could [verb] | 6 |
|
| 3 | [Wh det] [noun prp] [vb past] [pron] could [verb] | 6 |
|
