| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] necessary for we [to-vb] | 10 |
|
| 2 | it [is] necessary for us [verb] | 10 |
|
| 3 | it [is] necessary for we [verb] | 10 |
|
| 4 | it [is] necessary for we [verb] | 10 |
|
| 5 | it is necessary for we [verb] | 9 |
|
