| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [is] vital that [noun pl] | 20 |
|
| 2 | [pers pn] [is] vital that [noun pl] | 20 |
|
| 3 | it [is] vital that [noun pl] | 20 |
|
| 4 | it [is] vital that [noun pl] | 20 |
|
| 5 | [pron] is vital that [noun pl] | 17 |
|
