| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] were [vb pp] at a | 86 |
|
| 2 | [noun pl] were [v-ing] at a | 9 |
|
| 3 | [noun pl] were taken at a | 5 |
|
| 4 | [noun pl] were take at a | 5 |
|
