| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | did n't know [pron] else | 14 |
|
| 2 | [vb past] n't know what else | 12 |
|
| 3 | [vb past] n't know [Wh det] else | 12 |
|
| 4 | [vb past] n't know what else | 12 |
|
