| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [v-ing] at the time | 65 |
|
| 2 | was [v-ing] at the time | 43 |
|
| 3 | were [v-ing] at the time | 22 |
|
| 4 | [was/were] doing at the time | 8 |
|
| 5 | [was/were] working at the time | 8 |
|
| 6 | [was/were] happening at the time | 5 |
|
| 7 | [was/were] living at the time | 5 |
|
