| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it [be] necessary for | 52 |
|
| 2 | [vb infin] [conj] it [be] necessary | 21 |
|
| 3 | [vb infin] [conj] it [be] for | 8 |
|
| 4 | [vb infin] it [be] necessary for | 6 |
|
