| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [pron] be [v-ing] [prep] | 2650 |
|
| 2 | [Wh det] [pron] [be] [v-ing] [prep] | 2650 |
|
| 3 | [Wh det] [pron] [was/were] [v-ing] [prep] | 799 |
|
| 4 | [Wh det] [pron] were [verb] [prep] | 324 |
|
| 5 | [pron] [pron] were [v-ing] [prep] | 303 |
|
