| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is imperative that [pron] | 18 |
|
| 2 | [pron] is imperative that [pron] | 18 |
|
| 3 | it is imperative that [pron] | 18 |
|
| 4 | [pers pn] is imperative that [pron] | 18 |
|
| 5 | is imperative that [pron] [verb] | 12 |
|
| 6 | is imperative that [pron] [vb base] | 12 |
|
