| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] for [adj] [noun] | 10045 |
|
| 2 | necessary [prep] [adj] [noun] | 375 |
|
| 3 | necessary [prep] [adj] [noun] | 375 |
|
| 4 | necessary for [adj] [noun] | 219 |
|
