| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should never [be] [vb pp] that | 6 |
|
| 2 | should never [be] [verb] that | 6 |
|
| 3 | should never [be] forget that | 6 |
|
| 4 | should never [be] forgotten that | 6 |
|
| 5 | should never be [verb] that | 6 |
|
| 6 | should never [be] [verb] that | 6 |
|
