| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [adj] | 89695 |
|
| 2 | [pron] be necessary | 2265 |
|
| 3 | [pers pn] be necessary | 2010 |
|
| 4 | it [be] necessary | 1964 |
|
| 5 | it be necessary | 1964 |
|
