| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [adv] necessary [verb] | 479 |
|
| 2 | it [is] [adv] necessary [to-vb] | 478 |
|
| 3 | it is [adv] necessary [verb] | 461 |
|
| 4 | it [is] [adv] necessary [verb] | 296 |
|
| 5 | it [is] not necessary [verb] | 183 |
|
| 6 | it [is] [not/n't] necessary [verb] | 183 |
|
| 7 | it [is] not necessary [verb] | 175 |
|
| 8 | it [is] also necessary [verb] | 53 |
|
| 9 | it [is] also necessary [verb] | 53 |
|
| 10 | it [is] only necessary [verb] | 39 |
|
| 11 | it [is] only necessary [verb] | 39 |
|
| 12 | it [is] therefore necessary [verb] | 33 |
|
| 13 | it [is] therefore necessary [verb] | 33 |
|
| 14 | it [is] now necessary [verb] | 24 |
|
| 15 | it [is] now necessary [verb] | 24 |
|
| 16 | it [is] [adv] necessary consider | 22 |
|
| 17 | it [is] [adv] necessary to consider | 22 |
|
| 18 | it [is] often necessary [verb] | 21 |
|
| 19 | it [is] often necessary [verb] | 21 |
|
| 20 | it 's [adv] necessary [verb] | 18 |
|
| 21 | it [is] still necessary [verb] | 17 |
|
| 22 | it [is] still necessary [verb] | 17 |
|
| 23 | it [is] [adv] necessary have | 16 |
|
| 24 | it [is] [adv] necessary to have | 16 |
|
| 25 | it [is] then necessary [verb] | 14 |
|
| 26 | it [is] then necessary [verb] | 14 |
|
| 27 | it [is] [adv] necessary to use | 13 |
|
| 28 | it [is] [adv] necessary use | 13 |
|
| 29 | it [is] usually necessary [verb] | 12 |
|
| 30 | it [is] usually necessary [verb] | 12 |
|
