| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which could [be] [vb pp] to a | 7 |
|
| 2 | which could be [verb] to a | 7 |
|
| 3 | which could be [verb] to a | 7 |
|
| 4 | which could [be] [verb] to a | 7 |
|
