| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | that it [be] essential that | 17 |
|
| 2 | that it be essential that | 17 |
|
| 3 | that it [be] essential that | 17 |
|
| 4 | that it is essential that | 10 |
|
| 5 | that it [is] essential that | 10 |
|
| 6 | that it was essential that | 7 |
|
| 7 | that it [was/were] essential that | 7 |
|
