| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] working [prep] the time | 9 |
|
| 2 | [was/were] working at the time | 8 |
|
| 3 | [was/were] working at the time | 8 |
|
| 4 | was working [prep] the time | 7 |
|
