| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | know [conj] it [is] [adv] | 108 |
|
| 2 | [verb] whether it [is] [adv] | 47 |
|
| 3 | know whether [pron] [is] [adv] | 23 |
|
| 4 | know whether it [be] [adv] | 16 |
|
