| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [be] [vb pp] [prep] [adj] | 647 |
|
| 2 | [be] [vb pp] [prep] be [adj] | 457 |
|
| 3 | could [be] [vb pp] [prep] be | 148 |
|
