| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] to be [verb] | 492 |
|
| 2 | could be [verb] to be | 152 |
|
| 3 | could [verb] to be [verb] | 34 |
|
| 4 | could be [verb] to [verb] | 8 |
|
