| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] [was/were] [verb] at [art] [noun pl] | 16 |
|
| 2 | [noun prp] [was/were] [v-ing] at [art] [noun pl] | 9 |
|
| 3 | [noun prp] [was/were] [vb pp] at [art] [noun pl] | 7 |
|
