| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] essential that the | 95 |
|
| 2 | it [is] that the [adj] | 30 |
|
| 3 | it [is] essential that [adj] | 22 |
|
| 4 | [is] essential that the [adj] | 15 |
|
