| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [not/n't] necessary [verb] | 183 |
|
| 2 | [noun sg] it [is] necessary [verb] | 118 |
|
| 3 | [noun sg] it [is] [not/n't] [verb] | 57 |
|
| 4 | [noun sg] it [is] [not/n't] necessary | 22 |
|
| 5 | [noun sg] [is] [not/n't] necessary [verb] | 7 |
|
