| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [verb] [prep] a | 20888 |
|
| 2 | [was/were] [vb pp] [prep] a | 17733 |
|
| 3 | [was/were] [vb pp] [verb] [prep] | 3552 |
|
| 4 | [vb pp] [verb] [prep] a | 2388 |
|
| 5 | [was/were] [vb pp] [verb] a | 1704 |
|
