| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [verb] on [num] april | 45 |
|
| 2 | [was/were] [verb] on [num] april | 45 |
|
| 3 | [was/were] [vb pp] on [num] april | 45 |
|
| 4 | was [verb] on [num] april | 42 |
|
| 5 | [was/were] [verb] on 1 april | 6 |
|
