| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [modal v] [be] [vb pp] [prep] [adj] | 36 |
|
| 2 | [vb pp] could [be] [vb pp] [prep] [adj] | 12 |
|
| 3 | [verb] could [be] [vb pp] [prep] [adj] | 11 |
|
| 4 | [vb pp] could [be] [verb] [prep] [adj] | 7 |
|
