| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is therefore [verb] that | 24 |
|
| 2 | it is therefore [verb] [that] | 24 |
|
| 3 | it is therefore [verb] that | 24 |
|
| 4 | it is therefore [vb pp] [conj] | 23 |
|
| 5 | it is therefore recommend [conj] | 8 |
|
| 6 | it is therefore recommended [conj] | 8 |
|
