| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] [verb] it at the time | 28 |
|
| 2 | [not/n't] [vb infin] it at the time | 27 |
|
| 3 | [not/n't] know [pron] at the time | 13 |
|
| 4 | [not/n't] know it at the time | 12 |
|
| 5 | [not/n't] know it at the [noun sg] | 12 |
|
| 6 | [not/n't] know it at [art] time | 12 |
|
| 7 | [not/n't] know it at the [noun] | 12 |
|
| 8 | [adv] know it at the time | 12 |
|
| 9 | [not/n't] know it at [art] time | 12 |
|
| 10 | [not/n't] know it at the time | 12 |
|
| 11 | [not/n't] know it at the time | 12 |
|
| 12 | [not/n't] know it [prep] the time | 12 |
|
