| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could be [verb] to [be] | 153 |
|
| 2 | be [verb] to [be] a | 117 |
|
| 3 | could be [verb] to a | 74 |
|
| 4 | could [verb] to [be] a | 23 |
|
