| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] should be | 261 |
|
| 2 | [be] [vb pp] should | 180 |
|
| 3 | [be] should be | 22 |
|
| 4 | [be] [vb pp] be | 19 |
|
