| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] not necessary [to-vb] | 203 |
|
| 2 | it [be] necessary [to-vb] that | 58 |
|
| 3 | [be] not necessary [to-vb] that | 13 |
|
| 4 | it [be] not necessary that | 8 |
|
| 5 | it [be] not [to-vb] that | 5 |
|
