| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | did [not/n't] [vb infin] at the time | 29 |
|
| 2 | did n't [verb] at the time | 20 |
|
| 3 | did [not/n't] know at the time | 11 |
|
| 4 | did [not/n't] know at the time | 11 |
|
| 5 | did not [verb] at the time | 9 |
|
| 6 | did [not/n't] realise at the time | 7 |
|
| 7 | did [not/n't] realise at the time | 7 |
|
