| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [conj] [am/are] necessary for | 14 |
|
| 2 | [noun pl] [conj] [am/are] necessary for | 13 |
|
| 3 | [conj] [am/are] necessary for [art] | 7 |
|
| 4 | [conj] [am/are] necessary for [art] | 7 |
|
| 5 | [conj] [am/are] necessary for the | 5 |
|
| 6 | [conj] [am/are] necessary for the | 5 |
|
