| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [vb infin] [be] [verb] be | 22 |
|
| 2 | [vb mod] [vb infin] [be] [verb] be | 22 |
|
| 3 | could [vb infin] [be] [verb] be | 7 |
|
| 4 | could [vb infin] [be] [verb] [be] | 7 |
|
| 5 | could [verb] [be] [verb] be | 7 |
|
