I should nicker you should nicker he should nicker we should nicker you should nicker they should nicker
V-ing form
I should be nickering you should be nickering he should be nickering we should be nickering you should be nickering they should be nickering
Perfect
I should have nickered you should have nickered he should have nickered we should have nickered you should have nickered they should have nickered
V-ing perfect
I should have been nickering you should have been nickering he should have been nickering we should have been nickering you should have been nickering they should have been nickering
Negation
Simple form
I should not nicker you should not nicker he should not nicker we should not nicker you should not nicker they should not nicker
V-ing form
I should not be nickering you should not be nickering he should not be nickering we should not be nickering you should not be nickering they should not be nickering
Perfect
I should not have nickered you should not have nickered he should not have nickered we should not have nickered you should not have nickered they should not have nickered
V-ing perfect
I should not have been nickering you should not have been nickering he should not have been nickering we should not have been nickering you should not have been nickering they should not have been nickering
Interrogative form
Simple form
should I nicker? should you nicker? should he nicker? should we nicker? should you nicker? should they nicker?
V-ing form
should I be nickering? should you be nickering? should he be nickering? should we be nickering? should you be nickering? should they be nickering?
Perfect
should I have nickered? should you have nickered? should he have nickered? should we have nickered? should you have nickered? should they have nickered?
V-ing perfect
should I have been nickering? should you have been nickering? should he have been nickering? should we have been nickering? should you have been nickering? should they have been nickering?
Interro-negative form
Simple form
should I not nicker? should you not nicker? should he not nicker? should we not nicker? should you not nicker? should they not nicker?
V-ing form
should I not be nickering? should you not be nickering? should he not be nickering? should we not be nickering? should you not be nickering? should they not be nickering?
Perfect
should I not have nickered? should you not have nickered? should he not have nickered? should we not have nickered? should you not have nickered? should they not have nickered?
V-ing perfect
should I not have been nickering? should you not have been nickering? should he not have been nickering? should we not have been nickering? should you not have been nickering? should they not have been nickering?