| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] [art] [adj] [noun pl] | 1700 |
|
| 2 | be necessary [verb] [art] [adj] | 273 |
|
| 3 | be necessary [verb] [adj] [noun pl] | 121 |
|
| 4 | be necessary [verb] [art] [noun pl] | 99 |
|
| 5 | necessary [verb] [art] [adj] [noun pl] | 60 |
|
