| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is therefore [adj] that | 113 |
|
| 2 | is [adv] vital that | 21 |
|
| 3 | is [adv] vital that | 21 |
|
| 4 | is therefore vital that | 8 |
|
| 5 | [be] therefore vital that | 8 |
|
| 6 | [is] therefore vital that | 8 |
|
| 7 | be therefore vital that | 8 |
|
| 8 | is therefore vital [conj] | 8 |
|
