| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] it [is] [verb] | 1032 |
|
| 2 | [Wh det] [pron] [is] [v-ing] | 1000 |
|
| 3 | [Wh det] it [be] [v-ing] | 258 |
|
| 4 | [pron] it [is] [v-ing] | 256 |
|
