| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] known at [adj] time | 5 |
|
| 2 | [was/were] known [prep] [det] time | 5 |
|
| 3 | [was/were] known [prep] that time | 5 |
|
| 4 | [was/were] known [prep] that time | 5 |
|
| 5 | [was/were] known [prep] [adj] time | 5 |
|
| 6 | [was/were] known at [adj] time | 5 |
|
