| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [verb] be [verb] | 1297 |
|
| 2 | could [vb infin] be [verb] | 1297 |
|
| 3 | could have be [verb] | 1154 |
|
| 4 | [modal v] 've be [verb] | 62 |
|
| 5 | could 've [be] [verb] | 20 |
|
