| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could be [vb pp] [be] [verb] | 23 |
|
| 2 | could [be] [vb pp] be [verb] | 23 |
|
| 3 | could [be] [vb pp] [be] [verb] | 23 |
|
| 4 | could [be] [vb pp] [was/were] [verb] | 21 |
|
| 5 | could [be] [vb pp] [be] [vb pp] | 15 |
|
| 6 | could [be] [vb pp] was [verb] | 15 |
|
| 7 | could [be] [vb pp] [be] [to-vb] | 8 |
|
| 8 | could [be] [vb pp] were [verb] | 6 |
|
| 9 | could [be] done [be] [verb] | 5 |
|
