| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | there could [be] [noun] | 98 |
|
| 2 | [ex0] could be [noun] | 98 |
|
| 3 | [ex0] could [be] [noun pl] | 50 |
|
| 4 | [ex0] could [be] [noun sg] | 46 |
|
| 5 | [ex0] could [be] problem | 9 |
|
| 6 | [ex0] could [be] problems | 9 |
|
