| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | n't [verb] at the time | 34 |
|
| 2 | n't [vb infin] at the time | 25 |
|
| 3 | n't know at the [noun sg] | 18 |
|
| 4 | n't know at the [noun] | 18 |
|
| 5 | [adv] know at the time | 15 |
|
| 6 | [not/n't] know at the time | 14 |
|
| 7 | not know at the time | 14 |
|
| 8 | n't know at the time | 12 |
|
| 9 | n't know [prep] the time | 12 |
|
| 10 | n't know at [art] time | 12 |
|
| 11 | n't know at the time | 12 |
|
| 12 | n't know [prep] the time | 12 |
|
| 13 | n't know at the time | 12 |
|
| 14 | n't know at [art] time | 12 |
|
| 15 | n't know at the time | 12 |
|
