| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adj] [verb] that | 1799 |
|
| 2 | it is necessary [verb] [conj] | 63 |
|
| 3 | it be necessary [verb] that | 58 |
|
| 4 | it [be] necessary [verb] that | 58 |
|
| 5 | it [is] necessary [verb] that | 45 |
|
| 6 | [pron] is necessary [verb] that | 44 |
|
| 7 | it is necessary [verb] [that] | 43 |
|
| 8 | [pers pn] is necessary [verb] that | 43 |
|
| 9 | it is necessary [verb] that | 43 |
|
| 10 | it is necessary [verb] that | 43 |
|
