| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] sure if i [vb mod] | 14 |
|
| 2 | not sure if i [vb mod] | 13 |
|
| 3 | [not/n't] sure if i [vb mod] | 13 |
|
| 4 | not sure if i [vb mod] | 12 |
|
| 5 | sure if i [vb mod] [vb infin] | 10 |
|
| 6 | sure if i [vb mod] [verb] | 10 |
|
