| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [verb] [prep] a | 17977 |
|
| 2 | [be] use [prep] a | 1703 |
|
| 3 | [was/were] use [prep] [art] | 724 |
|
| 4 | [was/were] use [prep] [art] | 724 |
|
| 5 | [was/were] use [prep] a | 286 |
|
| 6 | [was/were] use [prep] a | 245 |
|
