| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which could [verb] be | 89 |
|
| 2 | which could [verb] [be] | 89 |
|
| 3 | which could [vb infin] [be] | 89 |
|
| 4 | which could [verb] been | 88 |
|
| 5 | which could have [be] | 88 |
|
| 6 | which could [verb] [been] | 88 |
|
| 7 | which could have [be] | 88 |
|
