| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [vb pp] clear | 75 |
|
| 2 | it [be] made clear | 72 |
|
| 3 | it [was/were] [vb pp] clear | 53 |
|
| 4 | it was [vb pp] clear | 52 |
|
| 5 | it [is] [vb pp] clear | 21 |
|
| 6 | it is [vb pp] clear | 19 |
|
