| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] [adj] [noun pl] | 1147 |
|
| 2 | necessary [verb] [adj] [noun pl] | 215 |
|
| 3 | be necessary [verb] [adj] | 125 |
|
| 4 | be necessary [verb] [noun pl] | 28 |
|
