| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be necessary [verb] [noun] | 145 |
|
| 2 | it be necessary [to-vb] [noun] | 145 |
|
| 3 | it is necessary [verb] [noun] | 111 |
|
| 4 | it be necessary [verb] [noun pl] | 68 |
|
| 5 | it be necessary [verb] [noun sg] | 66 |
|
| 6 | it was necessary [verb] [noun] | 31 |
|
| 7 | it be necessary take [noun] | 10 |
|
| 8 | it be necessary to take [noun] | 10 |
|
| 9 | it be necessary to make [noun] | 8 |
|
| 10 | it be necessary make [noun] | 8 |
|
| 11 | it be necessary [verb] [noun prp] | 7 |
|
| 12 | it be necessary have [noun] | 6 |
|
| 13 | it be necessary to have [noun] | 6 |
|
| 14 | it be necessary [verb] account | 5 |
|
| 15 | it be necessary use [noun] | 5 |
|
| 16 | it be necessary to use [noun] | 5 |
|
| 17 | it be necessary [verb] account | 5 |
|
