| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] at that time | 117 |
|
| 2 | [Wh pn] at [adj] time | 52 |
|
| 3 | [Wh pn] at that [noun] | 30 |
|
| 4 | [Wh pn] at that [noun sg] | 30 |
|
| 5 | [Wh pn] [prep] that time | 26 |
|
| 6 | [Wh pn] at that time | 25 |
|
