| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should not [be] [vb pp] | 2510 |
|
| 2 | should therefore [be] [vb pp] | 122 |
|
| 3 | not therefore [be] [vb pp] | 38 |
|
| 4 | should not therefore [be] | 7 |
|
