I should shack you should shack he should shack we should shack you should shack they should shack
V-ing form
I should be shacking you should be shacking he should be shacking we should be shacking you should be shacking they should be shacking
Perfect
I should have shacked you should have shacked he should have shacked we should have shacked you should have shacked they should have shacked
V-ing perfect
I should have been shacking you should have been shacking he should have been shacking we should have been shacking you should have been shacking they should have been shacking
Negation
Simple form
I should not shack you should not shack he should not shack we should not shack you should not shack they should not shack
V-ing form
I should not be shacking you should not be shacking he should not be shacking we should not be shacking you should not be shacking they should not be shacking
Perfect
I should not have shacked you should not have shacked he should not have shacked we should not have shacked you should not have shacked they should not have shacked
V-ing perfect
I should not have been shacking you should not have been shacking he should not have been shacking we should not have been shacking you should not have been shacking they should not have been shacking
Interrogative form
Simple form
should I shack? should you shack? should he shack? should we shack? should you shack? should they shack?
V-ing form
should I be shacking? should you be shacking? should he be shacking? should we be shacking? should you be shacking? should they be shacking?
Perfect
should I have shacked? should you have shacked? should he have shacked? should we have shacked? should you have shacked? should they have shacked?
V-ing perfect
should I have been shacking? should you have been shacking? should he have been shacking? should we have been shacking? should you have been shacking? should they have been shacking?
Interro-negative form
Simple form
should I not shack? should you not shack? should he not shack? should we not shack? should you not shack? should they not shack?
V-ing form
should I not be shacking? should you not be shacking? should he not be shacking? should we not be shacking? should you not be shacking? should they not be shacking?
Perfect
should I not have shacked? should you not have shacked? should he not have shacked? should we not have shacked? should you not have shacked? should they not have shacked?
V-ing perfect
should I not have been shacking? should you not have been shacking? should he not have been shacking? should we not have been shacking? should you not have been shacking? should they not have been shacking?