I should winnow you should winnow he should winnow we should winnow you should winnow they should winnow
V-ing form
I should be winnowing you should be winnowing he should be winnowing we should be winnowing you should be winnowing they should be winnowing
Perfect
I should have winnowed you should have winnowed he should have winnowed we should have winnowed you should have winnowed they should have winnowed
V-ing perfect
I should have been winnowing you should have been winnowing he should have been winnowing we should have been winnowing you should have been winnowing they should have been winnowing
Negation
Simple form
I should not winnow you should not winnow he should not winnow we should not winnow you should not winnow they should not winnow
V-ing form
I should not be winnowing you should not be winnowing he should not be winnowing we should not be winnowing you should not be winnowing they should not be winnowing
Perfect
I should not have winnowed you should not have winnowed he should not have winnowed we should not have winnowed you should not have winnowed they should not have winnowed
V-ing perfect
I should not have been winnowing you should not have been winnowing he should not have been winnowing we should not have been winnowing you should not have been winnowing they should not have been winnowing
Interrogative form
Simple form
should I winnow? should you winnow? should he winnow? should we winnow? should you winnow? should they winnow?
V-ing form
should I be winnowing? should you be winnowing? should he be winnowing? should we be winnowing? should you be winnowing? should they be winnowing?
Perfect
should I have winnowed? should you have winnowed? should he have winnowed? should we have winnowed? should you have winnowed? should they have winnowed?
V-ing perfect
should I have been winnowing? should you have been winnowing? should he have been winnowing? should we have been winnowing? should you have been winnowing? should they have been winnowing?
Interro-negative form
Simple form
should I not winnow? should you not winnow? should he not winnow? should we not winnow? should you not winnow? should they not winnow?
V-ing form
should I not be winnowing? should you not be winnowing? should he not be winnowing? should we not be winnowing? should you not be winnowing? should they not be winnowing?
Perfect
should I not have winnowed? should you not have winnowed? should he not have winnowed? should we not have winnowed? should you not have winnowed? should they not have winnowed?
V-ing perfect
should I not have been winnowing? should you not have been winnowing? should he not have been winnowing? should we not have been winnowing? should you not have been winnowing? should they not have been winnowing?