I should sample you should sample he should sample we should sample you should sample they should sample
V-ing form
I should be sampling you should be sampling he should be sampling we should be sampling you should be sampling they should be sampling
Perfect
I should have sampled you should have sampled he should have sampled we should have sampled you should have sampled they should have sampled
V-ing perfect
I should have been sampling you should have been sampling he should have been sampling we should have been sampling you should have been sampling they should have been sampling
Negation
Simple form
I should not sample you should not sample he should not sample we should not sample you should not sample they should not sample
V-ing form
I should not be sampling you should not be sampling he should not be sampling we should not be sampling you should not be sampling they should not be sampling
Perfect
I should not have sampled you should not have sampled he should not have sampled we should not have sampled you should not have sampled they should not have sampled
V-ing perfect
I should not have been sampling you should not have been sampling he should not have been sampling we should not have been sampling you should not have been sampling they should not 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
should I not sample? should you not sample? should he not sample? should we not sample? should you not sample? should they not sample?
V-ing form
should I not be sampling? should you not be sampling? should he not be sampling? should we not be sampling? should you not be sampling? should they not be sampling?
Perfect
should I not have sampled? should you not have sampled? should he not have sampled? should we not have sampled? should you not have sampled? should they not have sampled?
V-ing perfect
should I not have been sampling? should you not have been sampling? should he not have been sampling? should we not have been sampling? should you not have been sampling? should they not have been sampling?