| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could be [verb] [prep] | 7289 |
|
| 2 | not be [verb] [prep] | 6186 |
|
| 3 | could not be [verb] | 1911 |
|
| 4 | could not [verb] [prep] | 1005 |
|
| 5 | could not be [prep] | 24 |
|
