| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [adj] [to-vb] to | 310 |
|
| 2 | it be [adj] [to-vb] to | 287 |
|
| 3 | it be necessary [to-vb] [prep] | 183 |
|
| 4 | it be necessary [to-vb] [prep] | 183 |
|
| 5 | it be necessary [to-vb] to | 34 |
|
| 6 | it be necessary [to-vb] to | 34 |
|
| 7 | it be necessary [verb] to | 34 |
|
| 8 | [pron] be necessary [to-vb] to | 34 |
|
| 9 | it [be] necessary [to-vb] to | 34 |
|
