| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] not know at the time | 14 |
|
| 2 | do not know at the time | 13 |
|
| 3 | [vb past] not know at the time | 12 |
|
| 4 | did not know at the time | 11 |
|
| 5 | not know [pron] at the time | 13 |
|
| 6 | not know [pers pn] at the time | 13 |
|
| 7 | not know it at the time | 12 |
|
| 8 | not know it at the time | 12 |
|
| 9 | not know at the time [conj] | 6 |
|
| 10 | not know at the time [that] | 5 |
|
| 11 | not know at the time that | 5 |
|
| 12 | not know at the time that | 5 |
|
