| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] why [pron] is essential that | 5 |
|
| 2 | [be] why [pron] is essential that | 5 |
|
| 3 | be why [pron] is essential that | 5 |
|
| 4 | why [pron] is essential that [pron] | 5 |
|
| 5 | why [pron] is essential that [pers pn] | 5 |
|
