| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [verb] [adj] [noun] | 6216 |
|
| 2 | necessary [verb] [adj] [noun] | 499 |
|
| 3 | it necessary [verb] [adj] | 55 |
|
| 4 | it necessary [verb] [noun] | 45 |
|
