| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] is necessary [verb] that [art] | 16 |
|
| 2 | it is necessary [verb] that [art] | 16 |
|
| 3 | [pers pn] is necessary [verb] that [art] | 16 |
|
| 4 | it is necessary [verb] that [art] | 16 |
|
| 5 | is [adv] necessary [verb] that [art] | 14 |
|
| 6 | is not necessary [verb] that [art] | 8 |
|
| 7 | is not necessary [verb] that [art] | 8 |
|
| 8 | is [not/n't] necessary [verb] that [art] | 8 |
|
| 9 | is [adv] necessary [verb] that [art] | 6 |
|
| 10 | is necessary [verb] that [art] [noun] | 17 |
|
| 11 | is necessary [verb] that [art] [noun sg] | 13 |
|
