| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] was [verb] at the time | 13 |
|
| 2 | [Wh det] was [verb] at the time | 13 |
|
| 3 | what was [verb] at the time | 11 |
|
| 4 | [Wh det] was [vb pp] at the time | 10 |
|
