| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [not/n't] necessary for the | 24 |
|
| 2 | it [be] [not/n't] necessary for the | 24 |
|
| 3 | it [be] not necessary for the | 24 |
|
| 4 | it [be] [not/n't] necessary for the | 24 |
|
| 5 | it [is] [not/n't] necessary for the | 18 |
|
| 6 | it is [not/n't] necessary for the | 17 |
|
| 7 | it [was/were] [not/n't] necessary for the | 6 |
|
| 8 | it was [not/n't] necessary for the | 6 |
|
