| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at that time | 334 |
|
| 2 | [verb] [adv prt] at that | 75 |
|
| 3 | [adv prt] at that time | 41 |
|
| 4 | [verb] [adv prt] that time | 18 |
|
