| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [Wh adv] it [be] [verb] | 166 |
|
| 2 | [prep] [Wh adv] [pron] [is] [verb] | 140 |
|
| 3 | [prep] [adv] it [is] [verb] | 132 |
|
