| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] could [be] [vb pp] | 300 |
|
| 2 | could [be] [vb pp] [adj] | 239 |
|
| 3 | [coord] could [be] [adj] | 57 |
|
| 4 | [coord] [be] [vb pp] [adj] | 25 |
|
