| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should be [vb pp] [prep] | 9543 |
|
| 2 | also be [vb pp] [prep] | 1982 |
|
| 3 | should also be [vb pp] | 481 |
|
| 4 | should also be [prep] | 18 |
|
