| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [adj] for [noun sg] [verb] | 127 |
|
| 2 | be necessary [prep] [noun sg] [verb] | 85 |
|
| 3 | be necessary for [noun] [verb] | 28 |
|
| 4 | [be] necessary for [noun sg] [verb] | 9 |
|
