| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is necessary [to-vb] [det] [noun] | 51 |
|
| 2 | is necessary [verb] [det] [noun] | 51 |
|
| 3 | is necessary [verb] [det] [noun sg] | 30 |
|
| 4 | is necessary [verb] [det] [noun pl] | 21 |
|
| 5 | is necessary [verb] some [noun] | 14 |
|
| 6 | is necessary [verb] these [noun] | 8 |
|
| 7 | is necessary [verb] this [noun] | 7 |
|
| 8 | is necessary [verb] such [noun] | 7 |
|
| 9 | is necessary understand [det] [noun] | 6 |
|
| 10 | is necessary [verb] that [noun] | 6 |
|
| 11 | is necessary to understand [det] [noun] | 6 |
|
| 12 | is necessary [verb] [det] statements | 5 |
|
| 13 | is necessary [verb] [det] statement | 5 |
|
