| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [ex0] [vb mod] [be] | 16146 |
|
| 2 | [ex0] [modal v] [be] | 16146 |
|
| 3 | [pron] could [be] | 9101 |
|
| 4 | [ex0] could [be] | 926 |
|
