| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] it [is] [verb] | 1816 |
|
| 2 | [Wh adv] it [be] [verb] | 1365 |
|
| 3 | [Wh adv] [pron] [is] [verb] | 1222 |
|
