| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be necessary [verb] that [noun] | 15 |
|
| 2 | [be] necessary [verb] that [noun] | 15 |
|
| 3 | is necessary [verb] that [noun] | 6 |
|
| 4 | [is] necessary [verb] that [noun] | 6 |
|
| 5 | [was/were] necessary [verb] that [noun] | 5 |
|
| 6 | necessary [verb] that [noun] [prep] | 10 |
|
| 7 | necessary [verb] that [noun] [prep] | 10 |
|
