| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [adv] essential [that] | 62 |
|
| 2 | that it [be] essential [that] | 17 |
|
| 3 | that it [be] [adv] [that] | 17 |
|
| 4 | that it [be] [adv] essential | 12 |
|
