I should purr you should purr she should purr we should purr you should purr they should purr
V-ing form
I should be purring you should be purring she should be purring we should be purring you should be purring they should be purring
Perfect
I should have purred you should have purred she should have purred we should have purred you should have purred they should have purred
V-ing perfect
I should have been purring you should have been purring she should have been purring we should have been purring you should have been purring they should have been purring
Negation
Simple form
I should not purr you should not purr she should not purr we should not purr you should not purr they should not purr
V-ing form
I should not be purring you should not be purring she should not be purring we should not be purring you should not be purring they should not be purring
Perfect
I should not have purred you should not have purred she should not have purred we should not have purred you should not have purred they should not have purred
V-ing perfect
I should not have been purring you should not have been purring she should not have been purring we should not have been purring you should not have been purring they should not have been purring
Interrogative form
Simple form
should I purr? should you purr? should she purr? should we purr? should you purr? should they purr?
V-ing form
should I be purring? should you be purring? should she be purring? should we be purring? should you be purring? should they be purring?
Perfect
should I have purred? should you have purred? should she have purred? should we have purred? should you have purred? should they have purred?
V-ing perfect
should I have been purring? should you have been purring? should she have been purring? should we have been purring? should you have been purring? should they have been purring?
Interro-negative form
Simple form
should I not purr? should you not purr? should she not purr? should we not purr? should you not purr? should they not purr?
V-ing form
should I not be purring? should you not be purring? should she not be purring? should we not be purring? should you not be purring? should they not be purring?
Perfect
should I not have purred? should you not have purred? should she not have purred? should we not have purred? should you not have purred? should they not have purred?
V-ing perfect
should I not have been purring? should you not have been purring? should she not have been purring? should we not have been purring? should you not have been purring? should they not have been purring?