| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] be [verb] | 2288 |
|
| 2 | could be [verb] to | 892 |
|
| 3 | [not/n't] be [verb] to | 835 |
|
| 4 | could [not/n't] [verb] to | 356 |
|
