| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it is necessary for [adj] | 6 |
|
| 2 | it is necessary for [art] [adj] | 11 |
|
| 3 | it is necessary for [art] [adj] | 11 |
|
| 4 | it is necessary for the [adj] | 10 |
|
| 5 | it is necessary for the [adj] | 10 |
|
| 6 | it is necessary for [adj] [noun] | 10 |
|
| 7 | it is necessary for [adj] [noun pl] | 6 |
|
