| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [adv] know at the time | 12 |
|
| 2 | [vb past] [not/n't] know [prep] the time | 12 |
|
| 3 | [vb past] [adv] know [prep] the time | 12 |
|
| 4 | [vb past] [adv] know [prep] the time | 12 |
|
| 5 | [vb past] [adv] know at the time | 12 |
|
| 6 | [vb past] not know [prep] the time | 12 |
|
| 7 | did [adv] know [prep] the time | 11 |
|
| 8 | [vb past] [adv] know [prep] the time | 11 |
|
| 9 | [vb past] n't know [prep] the time | 10 |
|
