| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] could [be] [vb pp] [prep] | 483 |
|
| 2 | [prep] [adj] could [be] [vb pp] | 62 |
|
| 3 | [prep] [adj] [be] [vb pp] [prep] | 21 |
|
| 4 | [prep] could [be] [vb pp] [prep] | 10 |
|
