| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [not/n't] [adv] necessary [to-vb] | 29 |
|
| 2 | [be] [not/n't] [adv] necessary [to-vb] | 29 |
|
| 3 | [is] [not/n't] [adv] necessary [to-vb] | 26 |
|
| 4 | is [not/n't] [adv] necessary [to-vb] | 25 |
|
| 5 | [not/n't] [adv] necessary [to-vb] [art] | 12 |
|
| 6 | [not/n't] [adv] necessary [to-vb] [art] | 12 |
|
| 7 | [not/n't] [adv] necessary [to-vb] the | 7 |
|
| 8 | [not/n't] [adv] necessary [to-vb] the | 7 |
|
| 9 | [not/n't] [adv] necessary [to-vb] a | 5 |
|
