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