| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [adv] [vb past] n't know [prep] | 5 |
|
| 2 | [pers pn] [adv] [vb past] n't know [prep] | 5 |
|
| 3 | [adv] [pron] [vb past] n't know [prep] | 6 |
|
| 4 | [adv] [pers pn] [vb past] n't know [prep] | 6 |
|
