| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [be] [vb pp] [art] | 2046 |
|
| 2 | [vb mod] [be] [vb pp] [art] | 2046 |
|
| 3 | should [be] [verb] [art] | 509 |
|
| 4 | should [be] [vb pp] [art] | 321 |
|
| 5 | should [be] [vb pp] [art] | 321 |
|
