| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] not [adv] | 12531 |
|
| 2 | [was/were] [adv] maintain | 61 |
|
| 3 | not [adv] maintain | 38 |
|
| 4 | [was/were] not maintain | 16 |
|
