| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adv] [verb] [adj] [noun] | 549 |
|
| 2 | is necessary [verb] [adj] [noun] | 126 |
|
| 3 | is [adv] necessary [verb] [adj] | 46 |
|
| 4 | [adv] necessary [verb] [adj] [noun] | 45 |
|
| 5 | is [adv] necessary [verb] [noun] | 43 |
|
