| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] sure [that] [pron] [adv] [vb past] | 10 |
|
| 2 | [not/n't] sure [that] [pron] [adv] [vb past] | 7 |
|
| 3 | not sure [that] [pron] [adv] [vb past] | 7 |
|
| 4 | not sure [that] [pron] [adv] [vb past] | 6 |
|
