| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] n't [verb] [prep] | 1108 |
|
| 2 | [was/were] [adv] know [prep] | 375 |
|
| 3 | [was/were] not know [prep] | 45 |
|
| 4 | [was/were] [not/n't] know [prep] | 45 |
|
| 5 | [be] n't know [prep] | 10 |
|
