| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] not sure whether | 180 |
|
| 2 | be not sure whether | 180 |
|
| 3 | was [adv] sure whether | 66 |
|
| 4 | was not sure [conj] | 63 |
|
| 5 | was not sure whether | 62 |
|
| 6 | was [not/n't] sure whether | 62 |
|
| 7 | was not [adj] whether | 60 |
|
| 8 | was not [adj] whether | 60 |
|
| 9 | [was/were] not sure whether | 23 |
|
| 10 | was not sure whether | 19 |
|
