| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | are necessary for [art] [noun] | 28 |
|
| 2 | [am/are] necessary for [art] [noun] | 28 |
|
| 3 | [am/are] necessary for [art] [noun] | 28 |
|
| 4 | [am/are] necessary for [art] [noun sg] | 26 |
|
| 5 | [am/are] necessary for the [noun] | 25 |
|
| 6 | [am/are] necessary for the [noun] | 25 |
|
