| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [verb] [prep] [pron] [prep] a | 199 |
|
| 2 | [was/were] [verb] [prep] [pron] [prep] a | 199 |
|
| 3 | [was/were] [verb] [prep] [pron] at [art] | 71 |
|
| 4 | [be] [verb] [prep] [pron] at a | 19 |
|
| 5 | [was/were] [verb] [prep] [pron] at a | 14 |
|
| 6 | [was/were] [verb] [prep] [pron] at a | 14 |
|
