| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and it [is] [adv] necessary [to-vb] | 22 |
|
| 2 | and it is [adv] necessary [to-vb] | 22 |
|
| 3 | and it [is] [adv] necessary [to-vb] | 17 |
|
| 4 | and it [is] not necessary [to-vb] | 5 |
|
| 5 | and it [is] [not/n't] necessary [to-vb] | 5 |
|
| 6 | and it [is] not necessary [to-vb] | 5 |
|
