| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [adv] necessary [verb] | 479 |
|
| 2 | it [is] [adv] necessary [verb] | 296 |
|
| 3 | it [is] now [adj] [verb] | 158 |
|
| 4 | it [be] now necessary [verb] | 26 |
|
| 5 | [pron] [is] now necessary [verb] | 25 |
|
| 6 | it [is] now necessary [verb] | 24 |
|
