| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | therefore [vb mod] be [vb pp] | 48 |
|
| 2 | therefore [modal v] be [vb pp] | 48 |
|
| 3 | therefore should be [vb pp] | 16 |
|
| 4 | therefore should be [vb pp] | 16 |
|
| 5 | therefore can be [vb pp] | 14 |
|
| 6 | therefore can be [vb pp] | 14 |
|
| 7 | therefore must be [vb pp] | 10 |
|
| 8 | therefore must be [vb pp] | 10 |
|
