| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] only be do | 66 |
|
| 2 | [vb mod] only [be] do | 66 |
|
| 3 | [vb mod] only [be] done | 64 |
|
| 4 | can only [be] do | 42 |
|
| 5 | could only [be] do | 14 |
|
