| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] at the time | 84 |
|
| 2 | was [v-ing] at the time | 43 |
|
| 3 | were [v-ing] at the time | 22 |
|
| 4 | be doing at the time | 11 |
|
| 5 | be working at the time | 9 |
|
| 6 | be happening at the time | 7 |
|
| 7 | be living at the time | 6 |
|
| 8 | be going at the time | 5 |
|
