| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should be [vb pp] | 21721 |
|
| 2 | [pron] be [vb pp] | 1340 |
|
| 3 | should [pron] be | 722 |
|
| 4 | should [pron] [vb pp] | 5 |
|
