| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] be [vb pp] clear | 76 |
|
| 2 | [vb mod] [be] made clear | 63 |
|
| 3 | should [be] [vb pp] clear | 38 |
|
| 4 | must [be] [vb pp] clear | 21 |
|
| 5 | will [be] [vb pp] clear | 7 |
|
| 6 | [vb mod] [be] kept clear | 7 |
|
