I should ail you should ail he should ail we should ail you should ail they should ail
V-ing form
I should be ailing you should be ailing he should be ailing we should be ailing you should be ailing they should be ailing
Perfect
I should have ailed you should have ailed he should have ailed we should have ailed you should have ailed they should have ailed
V-ing perfect
I should have been ailing you should have been ailing he should have been ailing we should have been ailing you should have been ailing they should have been ailing
Negation
Simple form
I should not ail you should not ail he should not ail we should not ail you should not ail they should not ail
V-ing form
I should not be ailing you should not be ailing he should not be ailing we should not be ailing you should not be ailing they should not be ailing
Perfect
I should not have ailed you should not have ailed he should not have ailed we should not have ailed you should not have ailed they should not have ailed
V-ing perfect
I should not have been ailing you should not have been ailing he should not have been ailing we should not have been ailing you should not have been ailing they should not have been ailing
Interrogative form
Simple form
should I ail? should you ail? should he ail? should we ail? should you ail? should they ail?
V-ing form
should I be ailing? should you be ailing? should he be ailing? should we be ailing? should you be ailing? should they be ailing?
Perfect
should I have ailed? should you have ailed? should he have ailed? should we have ailed? should you have ailed? should they have ailed?
V-ing perfect
should I have been ailing? should you have been ailing? should he have been ailing? should we have been ailing? should you have been ailing? should they have been ailing?
Interro-negative form
Simple form
should I not ail? should you not ail? should he not ail? should we not ail? should you not ail? should they not ail?
V-ing form
should I not be ailing? should you not be ailing? should he not be ailing? should we not be ailing? should you not be ailing? should they not be ailing?
Perfect
should I not have ailed? should you not have ailed? should he not have ailed? should we not have ailed? should you not have ailed? should they not have ailed?
V-ing perfect
should I not have been ailing? should you not have been ailing? should he not have been ailing? should we not have been ailing? should you not have been ailing? should they not have been ailing?