| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should be [vb pp] [prep] [art] | 3987 |
|
| 2 | be [vb pp] [prep] [art] same | 1617 |
|
| 3 | should be [prep] [art] same | 18 |
|
| 4 | should be [vb pp] [art] same | 17 |
|
