| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [vb pp] [adv] | 7549 |
|
| 2 | is [adv] clear | 738 |
|
| 3 | [vb pp] [adv] clear | 104 |
|
| 4 | is [vb pp] clear | 53 |
|
