| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [adv] necessary [verb] | 296 |
|
| 2 | it [is] [adv] [adj] do | 135 |
|
| 3 | it [is] [adv] [adj] do | 118 |
|
| 4 | it [is] [adv] necessary do | 9 |
|
| 5 | [pron] [is] [adv] necessary do | 5 |
|
| 6 | [pers pn] [is] [adv] necessary do | 5 |
|
| 7 | it [is] [adv] necessary do | 5 |
|
| 8 | it [is] [adv] necessary do | 5 |
|
| 9 | it [be] [adv] necessary do | 5 |
|
