| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | n't [vb infin] it at the time | 15 |
|
| 2 | not [vb infin] it at the time | 12 |
|
| 3 | not know it at the time | 12 |
|
| 4 | not realise it at the time | 5 |
|
