| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] [pron] [be] [v-ing] [prep] | 808 |
|
| 2 | 's [Wh adv] [pron] [be] [v-ing] | 241 |
|
| 3 | 's [Wh adv] [pron] [be] [prep] | 71 |
|
| 4 | 's [pron] [be] [v-ing] [prep] | 57 |
|
