| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] not [verb] if | 26 |
|
| 2 | it [is] not [vb pp] if | 25 |
|
| 3 | it [is] not known if | 22 |
|
| 4 | it [is] not know if | 22 |
|
| 5 | it is not [verb] if | 20 |
|
| 6 | it 's not [verb] if | 6 |
|
