| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] be [verb] at the time | 12 |
|
| 2 | [noun prp] [was/were] [verb] at the time | 12 |
|
| 3 | [noun prp] was [verb] at the time | 11 |
|
| 4 | [noun prp] [be] [v-ing] at the time | 7 |
|
