I'd be degenerating you'd be degenerating she'd be degenerating we'd be degenerating you'd be degenerating they'd be degenerating
Perfect
I should've degenerated you should've degenerated she should've degenerated we should've degenerated you should've degenerated they should've degenerated
V-ing perfect
I should've been degenerating you should've been degenerating she should've been degenerating we should've been degenerating you should've been degenerating they should've been degenerating
Negation
Simple form
I shouldn't degenerate you shouldn't degenerate she shouldn't degenerate we shouldn't degenerate you shouldn't degenerate they shouldn't degenerate
V-ing form
I shouldn't be degenerating you shouldn't be degenerating she shouldn't be degenerating we shouldn't be degenerating you shouldn't be degenerating they shouldn't be degenerating
Perfect
I shouldn't have degenerated you shouldn't have degenerated she shouldn't have degenerated we shouldn't have degenerated you shouldn't have degenerated they shouldn't have degenerated
V-ing perfect
I shouldn't have been degenerating you shouldn't have been degenerating she shouldn't have been degenerating we shouldn't have been degenerating you shouldn't have been degenerating they shouldn't have been degenerating
Interrogative form
Simple form
should I degenerate? should you degenerate? should she degenerate? should we degenerate? should you degenerate? should they degenerate?
V-ing form
should I be degenerating? should you be degenerating? should she be degenerating? should we be degenerating? should you be degenerating? should they be degenerating?
Perfect
should I have degenerated? should you have degenerated? should she have degenerated? should we have degenerated? should you have degenerated? should they have degenerated?
V-ing perfect
should I have been degenerating? should you have been degenerating? should she have been degenerating? should we have been degenerating? should you have been degenerating? should they have been degenerating?
Interro-negative form
Simple form
shouldn't I degenerate? shouldn't you degenerate? shouldn't she degenerate? shouldn't we degenerate? shouldn't you degenerate? shouldn't they degenerate?
V-ing form
shouldn't I be degenerating? shouldn't you be degenerating? shouldn't she be degenerating? shouldn't we be degenerating? shouldn't you be degenerating? shouldn't they be degenerating?
Perfect
shouldn't I have degenerated? shouldn't you have degenerated? shouldn't she have degenerated? shouldn't we have degenerated? shouldn't you have degenerated? shouldn't they have degenerated?
V-ing perfect
shouldn't I have been degenerating? shouldn't you have been degenerating? shouldn't she have been degenerating? shouldn't we have been degenerating? shouldn't you have been degenerating? shouldn't they have been degenerating?