| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] could be [vb pp] [art] [noun] | 10 |
|
| 2 | [Wh det] could [be] [vb pp] [art] [noun sg] | 8 |
|
| 3 | which could [be] [vb pp] [art] [noun] | 8 |
|
| 4 | [Wh det] could [be] [vb pp] the [noun] | 6 |
|
