| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [vb pp] at [art] | 7578 |
|
| 2 | should [be] [vb pp] at | 452 |
|
| 3 | should [be] [vb pp] [art] | 321 |
|
| 4 | should [be] at [art] | 54 |
|
