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