| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [adj] [prep] [pers pn] [to-vb] | 279 |
|
| 2 | it necessary [prep] [pers pn] [verb] | 9 |
|
| 3 | it necessary [prep] [pers pn] [to-vb] | 9 |
|
| 4 | [pron] necessary [prep] [pers pn] [to-vb] | 9 |
|
| 5 | it necessary [prep] [pron] [to-vb] | 9 |
|
