| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could be [verb] | 15987 |
|
| 2 | [vb mod] be do | 3085 |
|
| 3 | [modal v] be do | 3085 |
|
| 4 | could [be] do | 398 |
|
| 5 | could be do | 398 |
|
| 6 | could [be] do | 398 |
|
| 7 | could be do | 398 |
|
