| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [adj] for they [to-vb] | 108 |
|
| 2 | it be [adj] for they [to-vb] | 90 |
|
| 3 | it be necessary for [pron] [to-vb] | 48 |
|
| 4 | it be necessary for they [verb] | 5 |
|
| 5 | it [be] necessary for they [to-vb] | 5 |
|
| 6 | it be necessary for they [to-vb] | 5 |
|
| 7 | it be necessary [prep] they [to-vb] | 5 |
|
| 8 | [pron] be necessary for they [to-vb] | 5 |
|
