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