| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [verb] [adj] [verb] [noun] | 93 |
|
| 2 | it [verb] [adj] [verb] [noun] | 68 |
|
| 3 | [pron] [verb] necessary [verb] [noun] | 7 |
|
| 4 | it [verb] necessary [verb] [noun] | 5 |
|
