| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] therefore be [vb pp] to | 47 |
|
| 2 | should therefore be [vb pp] to | 15 |
|
| 3 | can therefore be [vb pp] to | 13 |
|
| 4 | must therefore be [vb pp] to | 6 |
|
