| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should be [vb pp] [prep] | 9543 |
|
| 2 | these should be [vb pp] | 144 |
|
| 3 | these be [vb pp] [prep] | 12 |
|
| 4 | these should be [prep] | 10 |
|
