| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] [adj] [noun] [prep] | 30688 |
|
| 2 | necessary [to-vb] [adj] [noun] | 488 |
|
| 3 | necessary [to-vb] [noun] [prep] | 250 |
|
| 4 | necessary [adj] [noun] [prep] | 130 |
|
| 5 | necessary [to-vb] [adj] [prep] | 56 |
|
