| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] could [be] [verb] [prep] | 593 |
|
| 2 | [Wh det] could [be] [vb pp] [prep] | 589 |
|
| 3 | [Wh det] [modal v] [be] done [prep] | 169 |
|
| 4 | [Wh det] [vb mod] [be] done [prep] | 169 |
|
| 5 | [pron] could [be] done [prep] | 56 |
|
| 6 | [Wh det] could [be] do [prep] | 22 |
|
| 7 | [Wh det] could [be] done [prep] | 22 |
|
