| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] for [det] [noun] | 572 |
|
| 2 | [be] necessary for [noun] | 128 |
|
| 3 | necessary for [det] [noun] | 73 |
|
| 4 | [be] necessary for [det] | 72 |
|
