| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [verb] [Wh det] [was/were] going on | 8 |
|
| 2 | [modal v] [vb infin] [Wh det] [was/were] going on | 8 |
|
| 3 | [modal v] [verb] [Wh det] was going on | 8 |
|
| 4 | [modal v] [verb] what [was/were] going on | 8 |
|
