| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [adv] [been] [adv] sure | 9 |
|
| 2 | have [adv] [been] [adv] sure | 9 |
|
| 3 | [vb base] [adv] [been] [adv] sure | 5 |
|
