| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] vital that [adj] | 33 |
|
| 2 | it [is] vital that [noun pl] | 20 |
|
| 3 | [is] vital that [adj] [noun pl] | 15 |
|
| 4 | it [is] that [adj] [noun pl] | 6 |
|
