| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [prep] [Wh det] [modal v] | 383 |
|
| 2 | [verb] [prep] [Wh det] [vb mod] | 383 |
|
| 3 | [verb] [prep] [pron] could | 148 |
|
| 4 | [verb] [prep] [Wh det] could | 39 |
|
| 5 | [verb] [prep] [Wh det] could | 39 |
|
