| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [verb] at that time | 44 |
|
| 2 | [was/were] [v-ing] at that [noun] | 27 |
|
| 3 | [was/were] [v-ing] at [adj] time | 25 |
|
| 4 | [be] [v-ing] at that time | 19 |
|
| 5 | [was/were] [v-ing] [prep] that time | 17 |
|
| 6 | [was/were] [v-ing] [prep] that time | 17 |
|
| 7 | [was/were] [v-ing] at that time | 16 |
|
