| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [noun] could be [verb] | 673 |
|
| 2 | [vb past] [conj] [noun] could [verb] | 115 |
|
| 3 | [vb past] [conj] [noun] could be | 51 |
|
| 4 | [vb past] [noun] could be [verb] | 21 |
|
| 5 | [vb past] [conj] could be [verb] | 8 |
|
