| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] it is not necessary [verb] | 12 |
|
| 2 | [coord] it [be] not necessary [verb] | 12 |
|
| 3 | [coord] it [is] not necessary [verb] | 12 |
|
| 4 | [coord] it be not necessary [verb] | 12 |
|
| 5 | [coord] it [be] not necessary [to-vb] | 12 |
|
| 6 | but it [be] not necessary [verb] | 7 |
|
| 7 | and it [be] not necessary [verb] | 5 |
|
