| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] for [adj] [noun] | 34796 |
|
| 2 | necessary for [adj] [noun] | 138 |
|
| 3 | [noun] necessary for [noun] | 81 |
|
| 4 | [noun] necessary for [adj] | 61 |
|
