| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] necessary for him [to-vb] | 9 |
|
| 2 | it be necessary for him [verb] | 9 |
|
| 3 | it was necessary for him [verb] | 5 |
|
| 4 | it [was/were] necessary for him [verb] | 5 |
|
