| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [verb] at | 9488 |
|
| 2 | [was/were] n't [verb] | 4481 |
|
| 3 | n't [verb] at | 1217 |
|
| 4 | [was/were] n't at | 192 |
|
