| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be necessary [to-vb] such [noun pl] | 8 |
|
| 2 | be necessary [verb] such [noun pl] | 8 |
|
| 3 | is necessary [verb] such [noun pl] | 7 |
|
| 4 | be necessary [verb] such statements | 6 |
|
| 5 | be necessary to understand such [noun pl] | 6 |
|
| 6 | be necessary understand such [noun pl] | 6 |
|
