| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [adv] necessary for him | 8 |
|
| 2 | it be not necessary for him | 6 |
|
| 3 | it be [not/n't] necessary for him | 6 |
|
| 4 | it be necessary for him [to-vb] | 9 |
|
| 5 | it be necessary for him [verb] | 9 |
|
