| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] know whether it [vb mod] be | 7 |
|
| 2 | not know whether it [vb mod] be | 7 |
|
| 3 | [adv] know whether it [vb mod] be | 7 |
|
| 4 | n't know whether it [vb mod] be | 5 |
|
