| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it necessary [to-vb] [adj] [noun] | 36 |
|
| 2 | [vb past] it [to-vb] [adj] [noun] | 26 |
|
| 3 | [vb past] it necessary [to-vb] [noun] | 19 |
|
| 4 | [vb past] it necessary [to-vb] [adj] | 16 |
|
| 5 | [vb past] necessary [to-vb] [adj] [noun] | 5 |
|
