| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] [pron] [be] [v-ing] | 3729 |
|
| 2 | was [Wh adv] [pron] [be] | 235 |
|
| 3 | was [pron] [be] [v-ing] | 116 |
|
