| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i [vb past] n't know [pers pn] | 384 |
|
| 2 | i [vb past] n't know [adv] | 53 |
|
| 3 | [vb past] n't know [pers pn] [adv] | 51 |
|
| 4 | i [vb past] n't [pers pn] [adv] | 5 |
|
