| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [vb pp] on [num] december | 36 |
|
| 2 | [was/were] [verb] on [num] december | 36 |
|
| 3 | was [verb] on [num] december | 31 |
|
| 4 | were [verb] on [num] december | 5 |
|
