| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | are [adj] [verb] [adj] [noun pl] | 357 |
|
| 2 | be necessary [verb] [adj] [noun pl] | 121 |
|
| 3 | [be] necessary [verb] [adj] [noun pl] | 121 |
|
| 4 | are necessary [verb] [adj] [noun] | 16 |
|
| 5 | [am/are] necessary [verb] [adj] [noun pl] | 5 |
|
