| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | necessary for [adj] [noun pl] | 65 |
|
| 2 | necessary for [adj] [noun pl] | 36 |
|
| 3 | necessary for [det] [noun pl] | 25 |
|
| 4 | necessary for all [noun pl] | 7 |
|
| 5 | necessary for all [noun pl] | 7 |
|
| 6 | necessary for [adj] reasons | 6 |
|
| 7 | necessary for certain [noun pl] | 5 |
|
| 8 | necessary for certain [noun pl] | 5 |
|
