| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it was therefore [vb pp] [conj] | 13 |
|
| 2 | it was therefore [verb] that | 13 |
|
| 3 | it was therefore [verb] [that] | 13 |
|
| 4 | it was therefore [verb] that | 13 |
|
