| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [pron] [be] [v-ing] | 10075 |
|
| 2 | [Wh det] [pers pn] [be] [v-ing] | 9981 |
|
| 3 | [Wh det] it [be] [verb] | 1647 |
|
| 4 | [pron] it [be] [v-ing] | 333 |
|
| 5 | [Wh det] it [be] [v-ing] | 258 |
|
