| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] could have be | 216 |
|
| 2 | could have be [noun] | 94 |
|
| 3 | [noun pl] could be [noun] | 27 |
|
| 4 | [noun pl] could have [noun] | 14 |
|
