| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] sure whether it [is] | 17 |
|
| 2 | [adv] sure whether it [is] | 17 |
|
| 3 | [not/n't] sure whether it [is] | 15 |
|
| 4 | not sure whether it [is] | 15 |
|
| 5 | not sure whether it [is] | 15 |
|
| 6 | [adv] sure whether it 's | 14 |
|
