I'd be apprehending you'd be apprehending he'd be apprehending we'd be apprehending you'd be apprehending they'd be apprehending
Perfect
I should've apprehended you should've apprehended he should've apprehended we should've apprehended you should've apprehended they should've apprehended
V-ing perfect
I should've been apprehending you should've been apprehending he should've been apprehending we should've been apprehending you should've been apprehending they should've been apprehending
Negation
Simple form
I shouldn't apprehend you shouldn't apprehend he shouldn't apprehend we shouldn't apprehend you shouldn't apprehend they shouldn't apprehend
V-ing form
I shouldn't be apprehending you shouldn't be apprehending he shouldn't be apprehending we shouldn't be apprehending you shouldn't be apprehending they shouldn't be apprehending
Perfect
I shouldn't have apprehended you shouldn't have apprehended he shouldn't have apprehended we shouldn't have apprehended you shouldn't have apprehended they shouldn't have apprehended
V-ing perfect
I shouldn't have been apprehending you shouldn't have been apprehending he shouldn't have been apprehending we shouldn't have been apprehending you shouldn't have been apprehending they shouldn't have been apprehending
Interrogative form
Simple form
should I apprehend? should you apprehend? should he apprehend? should we apprehend? should you apprehend? should they apprehend?
V-ing form
should I be apprehending? should you be apprehending? should he be apprehending? should we be apprehending? should you be apprehending? should they be apprehending?
Perfect
should I have apprehended? should you have apprehended? should he have apprehended? should we have apprehended? should you have apprehended? should they have apprehended?
V-ing perfect
should I have been apprehending? should you have been apprehending? should he have been apprehending? should we have been apprehending? should you have been apprehending? should they have been apprehending?
Interro-negative form
Simple form
shouldn't I apprehend? shouldn't you apprehend? shouldn't he apprehend? shouldn't we apprehend? shouldn't you apprehend? shouldn't they apprehend?
V-ing form
shouldn't I be apprehending? shouldn't you be apprehending? shouldn't he be apprehending? shouldn't we be apprehending? shouldn't you be apprehending? shouldn't they be apprehending?
Perfect
shouldn't I have apprehended? shouldn't you have apprehended? shouldn't he have apprehended? shouldn't we have apprehended? shouldn't you have apprehended? shouldn't they have apprehended?
V-ing perfect
shouldn't I have been apprehending? shouldn't you have been apprehending? shouldn't he have been apprehending? shouldn't we have been apprehending? shouldn't you have been apprehending? shouldn't they have been apprehending?