| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [verb] | 18437 |
|
| 2 | [Wh adv] it [verb] | 3527 |
|
| 3 | [Wh adv] it is | 1799 |
|
| 4 | [Wh adv] is [verb] | 36 |
|
