| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] [adj] [noun pl] | 4162 |
|
| 2 | be necessary [verb] [adj] | 178 |
|
| 3 | necessary [verb] [adj] [noun pl] | 125 |
|
| 4 | be necessary [verb] [noun pl] | 114 |
|
