| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] [verb] [pron] at the time | 37 |
|
| 2 | [not/n't] [vb infin] [pron] at the time | 35 |
|
| 3 | [not/n't] know [pron] at the [noun] | 14 |
|
| 4 | [not/n't] know [pron] at the [noun sg] | 14 |
|
| 5 | [not/n't] know [pron] at the time | 13 |
|
| 6 | [not/n't] know [pron] at the time | 13 |
|
| 7 | [adv] know [pron] at the time | 13 |
|
| 8 | [not/n't] know [pron] at the time | 13 |
|
| 9 | [not/n't] know [pron] at [art] time | 13 |
|
| 10 | [not/n't] know [pron] [prep] the time | 13 |
|
| 11 | [not/n't] know [pron] [prep] the time | 13 |
|
