| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [verb] [prep] a | 17979 |
|
| 2 | [was/were] [verb] at [art] | 3597 |
|
| 3 | [was/were] [verb] at [art] | 3597 |
|
| 4 | [be] [verb] at a | 2102 |
|
| 5 | [was/were] [verb] at a | 830 |
|
