| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] necessary [verb] these [noun] | 11 |
|
| 2 | be necessary [verb] these [noun] | 11 |
|
| 3 | [is] necessary [verb] these [noun] | 9 |
|
| 4 | is necessary [verb] these [noun] | 8 |
|
| 5 | [noun] necessary [verb] these [noun] | 5 |
|
| 6 | necessary [verb] these [noun] [prep] | 7 |
|
| 7 | necessary [verb] these [noun] [prep] | 7 |
|
