| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it should [be] made clear | 21 |
|
| 2 | it should [be] [vb pp] clear | 21 |
|
| 3 | it should be [vb pp] clear | 21 |
|
| 4 | it should [be] [vb pp] clear | 21 |
|
