| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] for [adj] [noun] | 233 |
|
| 2 | [is] necessary for [adj] [noun] | 40 |
|
| 3 | it [is] necessary for [adj] | 16 |
|
| 4 | it [is] necessary for [noun] | 11 |
|
