| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should be [vb pp] [prep] | 9543 |
|
| 2 | [verb] should be [vb pp] | 387 |
|
| 3 | [verb] be [vb pp] [prep] | 91 |
|
| 4 | [verb] should be [prep] | 26 |
|
