| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could be [verb] [prep] [noun] | 1510 |
|
| 2 | [Wh det] could be [verb] [prep] | 593 |
|
| 3 | [Wh det] could [verb] [prep] [noun] | 62 |
|
| 4 | [Wh det] could be [prep] [noun] | 17 |
|
| 5 | [Wh det] could be [verb] [noun] | 9 |
|
