| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be necessary [verb] [noun pl] | 114 |
|
| 2 | be [verb] such [noun pl] | 88 |
|
| 3 | be necessary [verb] such | 16 |
|
| 4 | necessary [verb] such [noun pl] | 13 |
|
