| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] what [was/were] [v-ing] on | 20 |
|
| 2 | [v-ing] what [was/were] go on | 20 |
|
| 3 | [v-ing] what [was/were] going on | 20 |
|
| 4 | [v-ing] what was [verb] on | 20 |
|
| 5 | wondering what [was/were] [verb] on | 10 |
|
