| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] it [is] [verb] | 688 |
|
| 2 | [prep] [Wh adv] it [verb] | 289 |
|
| 3 | [prep] it [is] [verb] | 283 |
|
| 4 | [prep] [Wh adv] it [is] | 224 |
|
