| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] it be essential that | 43 |
|
| 2 | [coord] it [be] essential that | 43 |
|
| 3 | [coord] it [is] essential that | 35 |
|
| 4 | [coord] it is essential that | 34 |
|
| 5 | and it [be] essential that | 26 |
|
| 6 | but it [be] essential that | 17 |
|
| 7 | [coord] it was essential that | 8 |
|
| 8 | [coord] it [was/were] essential that | 8 |
|
