| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] could be [vb pp] to [det] | 5 |
|
| 2 | [Wh det] could [be] [vb pp] to [det] | 5 |
|
| 3 | which could [be] [vb pp] to [det] | 5 |
|
