| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [be] be | 111 |
|
| 2 | [modal v] [be] be | 111 |
|
| 3 | could [be] be | 9 |
|
| 4 | could [be] be | 9 |
|
| 5 | could [be] [be] | 9 |
|
