| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [v-ing] their [noun pl] [prep] a | 7 |
|
| 2 | [was/were] [verb] their [noun pl] [prep] a | 7 |
|
| 3 | were [verb] their [noun pl] [prep] a | 7 |
|
| 4 | [was/were] [verb] their [noun pl] [prep] a | 6 |
|
