| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should be [prep] [art] | 532 |
|
| 2 | [modal v] be at [art] | 464 |
|
| 3 | should [be] at [art] | 54 |
|
| 4 | should be at [art] | 54 |
|
| 5 | should be at [art] | 54 |
|
| 6 | should [be] at [art] | 54 |
|
