| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be essential that [adj] | 89 |
|
| 2 | be essential that [adj] [noun pl] | 32 |
|
| 3 | it be essential that [noun pl] | 29 |
|
| 4 | it be that [adj] [noun pl] | 9 |
|
