| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is not [verb] if | 20 |
|
| 2 | [pers pn] is not [vb pp] if | 19 |
|
| 3 | [pers pn] is not know if | 17 |
|
| 4 | [pers pn] is not known if | 17 |
|
