| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] be for [adj] | 667 |
|
| 2 | [noun] be necessary for | 184 |
|
| 3 | be necessary for [adj] | 137 |
|
| 4 | [noun] necessary for [adj] | 88 |
|
| 5 | [noun] be necessary [adj] | 5 |
|
