| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] be could be | 7 |
|
| 2 | [modal v] be could be | 7 |
|
| 3 | could [be] could be | 5 |
|
| 4 | could [be] could be | 5 |
|
| 5 | could be could be | 5 |
|
| 6 | could be could be | 5 |
|
| 7 | could be could [be] | 5 |
|
| 8 | could be could be | 5 |
|
| 9 | could be [modal v] be | 5 |
|
| 10 | could be could [be] | 5 |
|
