| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they should be [vb pp] | 720 |
|
| 2 | [prep] they should be | 27 |
|
| 3 | [prep] should be [vb pp] | 14 |
|
| 4 | [prep] they be [vb pp] | 8 |
|
