| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] to [be] | 17811 |
|
| 2 | could be [verb] to | 892 |
|
| 3 | could [verb] to [be] | 156 |
|
| 4 | could be [verb] [be] | 73 |
|
