| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [not/n't] sure [Wh det] i [vb base] | 8 |
|
| 2 | be [not/n't] sure [Wh det] i [vb base] | 8 |
|
| 3 | [am/are] [not/n't] sure [Wh det] i [vb base] | 8 |
|
| 4 | 'm [not/n't] sure [Wh det] i [vb base] | 7 |
|
