| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [not/n't] know [pers pn] | 773 |
|
| 2 | [vb past] [not/n't] [pers pn] [adv] | 191 |
|
| 3 | [vb past] [not/n't] know [adv] | 159 |
|
| 4 | [not/n't] know [pers pn] [adv] | 136 |
|
