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