| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [be] [vb pp] to [art] | 777 |
|
| 2 | [be] [vb pp] to be [art] | 205 |
|
| 3 | should [be] [vb pp] to be | 73 |
|
| 4 | should [be] [vb pp] be [art] | 12 |
|
