| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | do [adv] at the time | 11 |
|
| 2 | do [not/n't] at the time | 7 |
|
| 3 | did [adv] at the time | 7 |
|
| 4 | do not at the time | 7 |
|
