| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] going on at the time | 7 |
|
| 2 | [be] going on at the time | 7 |
|
| 3 | be going on at the time | 7 |
|
| 4 | [was/were] going on at the time | 5 |
|
| 5 | was going on at the time | 5 |
|
