| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] necessary for [adj] [noun] | 99 |
|
| 2 | may [be] for [adj] [noun] | 16 |
|
| 3 | may [be] necessary for [adj] | 9 |
|
| 4 | may [be] necessary for [noun] | 6 |
|
