| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should be [vb pp] [prep] local | 15 |
|
| 2 | should be [vb pp] [prep] local | 15 |
|
| 3 | should be [vb pp] to local | 5 |
|
| 4 | should be [vb pp] by local | 5 |
|
