| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | do n't know who i | 20 |
|
| 2 | do n't know [Wh pn] i | 19 |
|
| 3 | do n't know [Wh pn] i | 12 |
|
| 4 | did n't know [Wh pn] i | 8 |
|
