| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [vb pp] [verb] | 2288 |
|
| 2 | [Wh adv] it [be] [verb] | 1365 |
|
| 3 | [Wh adv] it [be] [vb pp] | 1120 |
|
