| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] not sure whether | 180 |
|
| 2 | be not sure whether | 180 |
|
| 3 | [am/are] not sure whether | 147 |
|
| 4 | 're not sure [conj] | 26 |
|
| 5 | 're [adv] sure whether | 14 |
|
| 6 | 're not [adj] whether | 14 |
|
| 7 | 're not [adj] whether | 14 |
|
| 8 | 're not sure whether | 13 |
|
| 9 | 're [not/n't] sure whether | 13 |
|
| 10 | 're not sure whether | 13 |
|
