| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] necessary for [pers pn] [verb] | 27 |
|
| 2 | it [is] necessary for [pers pn] [to-vb] | 27 |
|
| 3 | it [is] necessary for [pers pn] [verb] | 27 |
|
| 4 | it is necessary for [pers pn] [verb] | 21 |
|
| 5 | it [is] necessary for us [verb] | 10 |
|
| 6 | it [is] necessary for me [verb] | 8 |
|
| 7 | it 's necessary for [pers pn] [verb] | 6 |
|
