| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun] [subord] a | 753 |
|
| 2 | [was/were] [prep] [noun] [subord] | 297 |
|
| 3 | [was/were] [prep] [noun] a | 277 |
|
| 4 | [was/were] [prep] [subord] a | 41 |
|
