| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [subord] it is [adv] necessary | 10 |
|
| 2 | [verb] [subord] it is [adv] necessary | 7 |
|
| 3 | [conj] [subord] it is [adv] necessary | 6 |
|
| 4 | [noun sg] [subord] it is [adv] necessary | 6 |
|
| 5 | [coord] [subord] it is [adv] necessary | 6 |
|
| 6 | and [subord] it is [adv] necessary | 5 |
|
| 7 | and [subord] it is [adv] necessary | 5 |
|
| 8 | [subord] it is [adv] [adv] necessary | 8 |
|
| 9 | [subord] it is [not/n't] [adv] necessary | 5 |
|
| 10 | [subord] it is not [adv] necessary | 5 |
|
| 11 | [subord] it is [adv] [adv] necessary | 8 |
|
| 12 | [subord] it is [adv] [adv] necessary | 8 |
|
| 13 | [subord] it is [adv] necessary [verb] | 30 |
|
| 14 | [subord] it is [adv] necessary [to-vb] | 29 |
|
| 15 | [subord] it is [adv] necessary [prep] | 8 |
|
| 16 | [subord] it is [adv] necessary [prep] | 8 |
|
| 17 | [subord] it is [adv] necessary for | 6 |
|
| 18 | [subord] it is [adv] necessary for | 6 |
|
