| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] have [be] | 984 |
|
| 2 | [vb mod] possibly have [be] | 29 |
|
| 3 | [modal v] possibly have [be] | 29 |
|
| 4 | could possibly [verb] [be] | 15 |
|
| 5 | could possibly have [be] | 14 |
|
