| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] could [be] [vb pp] [prep] | 589 |
|
| 2 | [Wh det] [modal v] [be] [vb pp] for | 267 |
|
| 3 | [Wh det] [vb mod] [be] [vb pp] for | 267 |
|
| 4 | [pron] could [be] [vb pp] for | 165 |
|
| 5 | [Wh det] could [be] [verb] for | 48 |
|
| 6 | [Wh det] could [be] [vb pp] for | 47 |
|
