| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] know whether it [vb mod] | 15 |
|
| 2 | [adv] know whether it [vb mod] | 15 |
|
| 3 | not know whether it [vb mod] | 15 |
|
| 4 | n't know whether it [vb mod] | 12 |
|
| 5 | know whether it [vb mod] [be] | 8 |
|
| 6 | know whether it [vb mod] [be] | 8 |
|
| 7 | know whether it [vb mod] be | 8 |
|
| 8 | know whether it [vb mod] be | 8 |
|
| 9 | know whether it [vb mod] [vb infin] | 7 |
|
| 10 | know whether it [vb mod] [verb] | 7 |
|
