| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [adv] not sure whether | 8 |
|
| 2 | [be] [adv] not sure whether | 8 |
|
| 3 | be [adv] not sure whether | 8 |
|
| 4 | [am/are] [adv] not sure whether | 7 |
|
| 5 | [be] still not sure whether | 5 |
|
| 6 | [be] still not sure whether | 5 |
|
| 7 | 'm [adv] not sure whether | 5 |
|
