| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [adv] an | 1872 |
|
| 2 | [was/were] [adv] for | 1279 |
|
| 3 | [adv] for an | 606 |
|
| 4 | [was/were] for an | 25 |
|
