| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [verb] at | 9488 |
|
| 2 | [was/were] [verb] not | 770 |
|
| 3 | [was/were] not at | 536 |
|
| 4 | [verb] not at | 231 |
|
