| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] [prep] [adj] | 86344 |
|
| 2 | should be [vb pp] [prep] | 9543 |
|
| 3 | should be [vb pp] [adj] | 621 |
|
| 4 | should be [prep] [adj] | 240 |
|
