I should lower you should lower he should lower we should lower you should lower they should lower
V-ing form
I should be lowering you should be lowering he should be lowering we should be lowering you should be lowering they should be lowering
Perfect
I should have lowered you should have lowered he should have lowered we should have lowered you should have lowered they should have lowered
V-ing perfect
I should have been lowering you should have been lowering he should have been lowering we should have been lowering you should have been lowering they should have been lowering
Negation
Simple form
I should not lower you should not lower he should not lower we should not lower you should not lower they should not lower
V-ing form
I should not be lowering you should not be lowering he should not be lowering we should not be lowering you should not be lowering they should not be lowering
Perfect
I should not have lowered you should not have lowered he should not have lowered we should not have lowered you should not have lowered they should not have lowered
V-ing perfect
I should not have been lowering you should not have been lowering he should not have been lowering we should not have been lowering you should not have been lowering they should not have been lowering
Interrogative form
Simple form
should I lower? should you lower? should he lower? should we lower? should you lower? should they lower?
V-ing form
should I be lowering? should you be lowering? should he be lowering? should we be lowering? should you be lowering? should they be lowering?
Perfect
should I have lowered? should you have lowered? should he have lowered? should we have lowered? should you have lowered? should they have lowered?
V-ing perfect
should I have been lowering? should you have been lowering? should he have been lowering? should we have been lowering? should you have been lowering? should they have been lowering?
Interro-negative form
Simple form
should I not lower? should you not lower? should he not lower? should we not lower? should you not lower? should they not lower?
V-ing form
should I not be lowering? should you not be lowering? should he not be lowering? should we not be lowering? should you not be lowering? should they not be lowering?
Perfect
should I not have lowered? should you not have lowered? should he not have lowered? should we not have lowered? should you not have lowered? should they not have lowered?
V-ing perfect
should I not have been lowering? should you not have been lowering? should he not have been lowering? should we not have been lowering? should you not have been lowering? should they not have been lowering?