| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is essential that [adj] [noun pl] | 31 |
|
| 2 | it be essential that [det] [noun pl] | 22 |
|
| 3 | it be essential that all [noun pl] | 11 |
|
| 4 | it be essential that all [noun pl] | 11 |
|
| 5 | it be essential that [adj] [noun pl] | 10 |
|
| 6 | it be essential that these [noun pl] | 5 |
|
| 7 | it be essential that these [noun pl] | 5 |
|
