| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [not/n't] necessary [verb] that | 12 |
|
| 2 | [pers pn] is [not/n't] necessary [verb] that | 12 |
|
| 3 | [pers pn] [is] not necessary [verb] that | 12 |
|
| 4 | [pers pn] [is] [not/n't] necessary [to-vb] that | 12 |
|
