| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | are [adj] for [noun] | 738 |
|
| 2 | [be] necessary for [noun] | 128 |
|
| 3 | be necessary for [noun] | 128 |
|
| 4 | are necessary [prep] [noun] | 33 |
|
| 5 | are necessary [prep] [noun] | 33 |
|
| 6 | are necessary for [noun] | 15 |
|
| 7 | [am/are] necessary for [noun] | 15 |
|
