| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [adj] for they [verb] | 110 |
|
| 2 | it [be] necessary for [pron] [verb] | 48 |
|
| 3 | it [be] necessary [prep] they [verb] | 5 |
|
| 4 | it [be] necessary [prep] they [verb] | 5 |
|
| 5 | [pron] [be] necessary for they [verb] | 5 |
|
| 6 | it [be] necessary for they [verb] | 5 |
|
