| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] i [vb past] [not/n't] know [adv] | 15 |
|
| 2 | [subord] i [vb past] [adv] know [adv] | 15 |
|
| 3 | [subord] i [vb past] not know [adv] | 15 |
|
| 4 | [subord] i [vb past] n't know [adv] | 14 |
|
