| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could not [be] [vb pp] be | 6 |
|
| 2 | could not be [verb] be | 6 |
|
| 3 | could not [be] [verb] be | 6 |
|
| 4 | could not be [verb] be | 6 |
|
