| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] not remember a time | 12 |
|
| 2 | could not remember a time | 7 |
|
| 3 | could not remember a time | 7 |
|
| 4 | [modal v] not remember a time | 7 |
|
| 5 | can not remember a time | 5 |
|
| 6 | [modal v] n't remember a time | 5 |
|
