| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [was/were] [verb] at a | 220 |
|
| 2 | a [noun sg] [was/were] [verb] at | 134 |
|
| 3 | a [noun sg] [verb] at a | 111 |
|
| 4 | a [noun sg] [was/were] [verb] a | 60 |
|
