I'd be quarterbacking you'd be quarterbacking he'd be quarterbacking we'd be quarterbacking you'd be quarterbacking they'd be quarterbacking
Perfect
I should've quarterbacked you should've quarterbacked he should've quarterbacked we should've quarterbacked you should've quarterbacked they should've quarterbacked
V-ing perfect
I should've been quarterbacking you should've been quarterbacking he should've been quarterbacking we should've been quarterbacking you should've been quarterbacking they should've been quarterbacking
Negation
Simple form
I shouldn't quarterback you shouldn't quarterback he shouldn't quarterback we shouldn't quarterback you shouldn't quarterback they shouldn't quarterback
V-ing form
I shouldn't be quarterbacking you shouldn't be quarterbacking he shouldn't be quarterbacking we shouldn't be quarterbacking you shouldn't be quarterbacking they shouldn't be quarterbacking
Perfect
I shouldn't have quarterbacked you shouldn't have quarterbacked he shouldn't have quarterbacked we shouldn't have quarterbacked you shouldn't have quarterbacked they shouldn't have quarterbacked
V-ing perfect
I shouldn't have been quarterbacking you shouldn't have been quarterbacking he shouldn't have been quarterbacking we shouldn't have been quarterbacking you shouldn't have been quarterbacking they shouldn't have been quarterbacking
Interrogative form
Simple form
should I quarterback? should you quarterback? should he quarterback? should we quarterback? should you quarterback? should they quarterback?
V-ing form
should I be quarterbacking? should you be quarterbacking? should he be quarterbacking? should we be quarterbacking? should you be quarterbacking? should they be quarterbacking?
Perfect
should I have quarterbacked? should you have quarterbacked? should he have quarterbacked? should we have quarterbacked? should you have quarterbacked? should they have quarterbacked?
V-ing perfect
should I have been quarterbacking? should you have been quarterbacking? should he have been quarterbacking? should we have been quarterbacking? should you have been quarterbacking? should they have been quarterbacking?
Interro-negative form
Simple form
shouldn't I quarterback? shouldn't you quarterback? shouldn't he quarterback? shouldn't we quarterback? shouldn't you quarterback? shouldn't they quarterback?
V-ing form
shouldn't I be quarterbacking? shouldn't you be quarterbacking? shouldn't he be quarterbacking? shouldn't we be quarterbacking? shouldn't you be quarterbacking? shouldn't they be quarterbacking?
Perfect
shouldn't I have quarterbacked? shouldn't you have quarterbacked? shouldn't he have quarterbacked? shouldn't we have quarterbacked? shouldn't you have quarterbacked? shouldn't they have quarterbacked?
V-ing perfect
shouldn't I have been quarterbacking? shouldn't you have been quarterbacking? shouldn't he have been quarterbacking? shouldn't we have been quarterbacking? shouldn't you have been quarterbacking? shouldn't they have been quarterbacking?