| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | do [adv] know at the time | 13 |
|
| 2 | [verb] [adv] know at the time | 13 |
|
| 3 | [vb past] [adv] know at the time | 11 |
|
| 4 | did [adv] know at the time | 11 |
|
| 5 | [adv] know [pers pn] at the time | 13 |
|
| 6 | [adv] know [pron] at the time | 13 |
|
| 7 | [adv] know it at the time | 12 |
|
| 8 | [adv] know it at the time | 12 |
|
