| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is not [adj] that | 645 |
|
| 2 | it is [adv] certain that | 94 |
|
| 3 | it is not certain [conj] | 29 |
|
| 4 | it [be] not certain that | 17 |
|
| 5 | it be not certain that | 17 |
|
| 6 | it [is] not certain that | 16 |
|
| 7 | it is not certain that | 15 |
|
| 8 | [pron] is not certain that | 15 |
|
| 9 | it is not certain [that] | 15 |
|
