| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] know it at the | 12 |
|
| 2 | [adv] know it at the | 12 |
|
| 3 | not know it at the | 12 |
|
| 4 | n't know it at the | 6 |
|
| 5 | not know it at the | 6 |
|
| 6 | know it at the time | 12 |
|
| 7 | know it at the [noun] | 12 |
|
| 8 | know it at the [noun sg] | 12 |
|
| 9 | know it at the time | 12 |
|
