| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] be [verb] | 4878 |
|
| 2 | [adv] be [verb] to | 2414 |
|
| 3 | could be [verb] to | 892 |
|
| 4 | could [adv] [verb] to | 714 |
|
