| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [be] [prep] [noun] | 325 |
|
| 2 | [Wh det] could [be] [prep] | 34 |
|
| 3 | [Wh det] could [be] [noun] | 17 |
|
| 4 | [Wh det] could [prep] [noun] | 13 |
|
