| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [adv] [that] [art] | 315 |
|
| 2 | it [be] essential [that] [art] | 126 |
|
| 3 | it [be] [adv] essential [that] | 62 |
|
| 4 | [be] [adv] essential [that] [art] | 17 |
|
