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