I should cover you should cover she should cover we should cover you should cover they should cover
V-ing form
I should be covering you should be covering she should be covering we should be covering you should be covering they should be covering
Perfect
I should have covered you should have covered she should have covered we should have covered you should have covered they should have covered
V-ing perfect
I should have been covering you should have been covering she should have been covering we should have been covering you should have been covering they should have been covering
Negation
Simple form
I should not cover you should not cover she should not cover we should not cover you should not cover they should not cover
V-ing form
I should not be covering you should not be covering she should not be covering we should not be covering you should not be covering they should not be covering
Perfect
I should not have covered you should not have covered she should not have covered we should not have covered you should not have covered they should not have covered
V-ing perfect
I should not have been covering you should not have been covering she should not have been covering we should not have been covering you should not have been covering they should not have been covering
Interrogative form
Simple form
should I cover? should you cover? should she cover? should we cover? should you cover? should they cover?
V-ing form
should I be covering? should you be covering? should she be covering? should we be covering? should you be covering? should they be covering?
Perfect
should I have covered? should you have covered? should she have covered? should we have covered? should you have covered? should they have covered?
V-ing perfect
should I have been covering? should you have been covering? should she have been covering? should we have been covering? should you have been covering? should they have been covering?
Interro-negative form
Simple form
should I not cover? should you not cover? should she not cover? should we not cover? should you not cover? should they not cover?
V-ing form
should I not be covering? should you not be covering? should she not be covering? should we not be covering? should you not be covering? should they not be covering?
Perfect
should I not have covered? should you not have covered? should she not have covered? should we not have covered? should you not have covered? should they not have covered?
V-ing perfect
should I not have been covering? should you not have been covering? should she not have been covering? should we not have been covering? should you not have been covering? should they not have been covering?