| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [vb pp] and | 26146 |
|
| 2 | [be] [vb pp] could | 77 |
|
| 3 | [vb pp] and could | 69 |
|
| 4 | [be] and could | 6 |
|
