| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [prep] a | 28147 |
|
| 2 | [was/were] [prep] a | 5287 |
|
| 3 | [was/were] [pron] [prep] | 3162 |
|
| 4 | [was/were] [pron] a | 660 |
|
