| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] it [be] necessary for | 24 |
|
| 2 | [noun] it be necessary for | 24 |
|
| 3 | [noun sg] it [be] necessary for | 17 |
|
| 4 | [noun] it [is] necessary for | 15 |
|
| 5 | [noun] it is necessary for | 14 |
|
| 6 | [noun] it [was/were] necessary for | 9 |
|
| 7 | [noun] it was necessary for | 9 |
|
| 8 | [noun pl] it [be] necessary for | 7 |
|
