| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] n't [verb] [prep] | 4012 |
|
| 2 | [verb] n't know [prep] | 731 |
|
| 3 | [vb past] [adv] know [prep] | 377 |
|
| 4 | [vb past] not know [prep] | 319 |
|
| 5 | [vb past] [not/n't] know [prep] | 319 |
|
| 6 | [vb past] n't know [prep] | 231 |
|
