| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [was/were] [verb] | 23513 |
|
| 2 | it [was/were] clear | 733 |
|
| 3 | it [verb] clear | 596 |
|
| 4 | [was/were] [verb] clear | 153 |
|
