| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adj] that all [noun pl] | 40 |
|
| 2 | it [is] essential that all [noun pl] | 11 |
|
| 3 | it [is] important that all [noun pl] | 11 |
|
| 4 | it [is] vital that all [noun pl] | 5 |
|
