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