| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] is necessary [verb] some [noun] | 14 |
|
| 2 | it is necessary [verb] some [noun] | 14 |
|
| 3 | [pers pn] is necessary [verb] some [noun] | 14 |
|
| 4 | it is necessary [verb] some [noun] | 14 |
|
| 5 | is necessary [verb] some [noun] [prep] | 11 |
|
| 6 | is necessary [verb] some [noun] [prep] | 11 |
|
| 7 | is necessary [verb] some [noun] of | 6 |
|
| 8 | is necessary [verb] some [noun] of | 6 |
|
