| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have be [vb pp] [verb] [adj] | 48 |
|
| 2 | could have be [verb] [verb] [adj] | 15 |
|
| 3 | could [verb] be [vb pp] [verb] [adj] | 15 |
|
| 4 | could have [be] [vb pp] [verb] [adj] | 15 |
|
