| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] [adj] [noun] | 672486 |
|
| 2 | necessary [prep] [adj] [noun] | 375 |
|
| 3 | [noun] necessary [prep] [adj] | 113 |
|
| 4 | [noun] necessary [prep] [noun] | 95 |
|
