I should brighten you should brighten she should brighten we should brighten you should brighten they should brighten
V-ing form
I should be brightening you should be brightening she should be brightening we should be brightening you should be brightening they should be brightening
Perfect
I should have brightened you should have brightened she should have brightened we should have brightened you should have brightened they should have brightened
V-ing perfect
I should have been brightening you should have been brightening she should have been brightening we should have been brightening you should have been brightening they should have been brightening
Negation
Simple form
I should not brighten you should not brighten she should not brighten we should not brighten you should not brighten they should not brighten
V-ing form
I should not be brightening you should not be brightening she should not be brightening we should not be brightening you should not be brightening they should not be brightening
Perfect
I should not have brightened you should not have brightened she should not have brightened we should not have brightened you should not have brightened they should not have brightened
V-ing perfect
I should not have been brightening you should not have been brightening she should not have been brightening we should not have been brightening you should not have been brightening they should not have been brightening
Interrogative form
Simple form
should I brighten? should you brighten? should she brighten? should we brighten? should you brighten? should they brighten?
V-ing form
should I be brightening? should you be brightening? should she be brightening? should we be brightening? should you be brightening? should they be brightening?
Perfect
should I have brightened? should you have brightened? should she have brightened? should we have brightened? should you have brightened? should they have brightened?
V-ing perfect
should I have been brightening? should you have been brightening? should she have been brightening? should we have been brightening? should you have been brightening? should they have been brightening?
Interro-negative form
Simple form
should I not brighten? should you not brighten? should she not brighten? should we not brighten? should you not brighten? should they not brighten?
V-ing form
should I not be brightening? should you not be brightening? should she not be brightening? should we not be brightening? should you not be brightening? should they not be brightening?
Perfect
should I not have brightened? should you not have brightened? should she not have brightened? should we not have brightened? should you not have brightened? should they not have brightened?
V-ing perfect
should I not have been brightening? should you not have been brightening? should she not have been brightening? should we not have been brightening? should you not have been brightening? should they not have been brightening?