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