English verb conjugation
SHOULD COO

Regular verb: coo - cooed - cooed

Affirmation

Simple form	V-ing form
I'd coo you'd coo he'd coo we'd coo you'd coo they'd coo	I'd be cooing you'd be cooing he'd be cooing we'd be cooing you'd be cooing they'd be cooing
Perfect	V-ing perfect
I should've cooed you should've cooed he should've cooed we should've cooed you should've cooed they should've cooed	I should've been cooing you should've been cooing he should've been cooing we should've been cooing you should've been cooing they should've been cooing

Negation

Simple form	V-ing form
I shouldn't coo you shouldn't coo he shouldn't coo we shouldn't coo you shouldn't coo they shouldn't coo	I shouldn't be cooing you shouldn't be cooing he shouldn't be cooing we shouldn't be cooing you shouldn't be cooing they shouldn't be cooing
Perfect	V-ing perfect
I shouldn't have cooed you shouldn't have cooed he shouldn't have cooed we shouldn't have cooed you shouldn't have cooed they shouldn't have cooed	I shouldn't have been cooing you shouldn't have been cooing he shouldn't have been cooing we shouldn't have been cooing you shouldn't have been cooing they shouldn't have been cooing

Interrogative form

Simple form	V-ing form
should I coo? should you coo? should he coo? should we coo? should you coo? should they coo?	should I be cooing? should you be cooing? should he be cooing? should we be cooing? should you be cooing? should they be cooing?
Perfect	V-ing perfect
should I have cooed? should you have cooed? should he have cooed? should we have cooed? should you have cooed? should they have cooed?	should I have been cooing? should you have been cooing? should he have been cooing? should we have been cooing? should you have been cooing? should they have been cooing?

Interro-negative form

Simple form	V-ing form
shouldn't I coo? shouldn't you coo? shouldn't he coo? shouldn't we coo? shouldn't you coo? shouldn't they coo?	shouldn't I be cooing? shouldn't you be cooing? shouldn't he be cooing? shouldn't we be cooing? shouldn't you be cooing? shouldn't they be cooing?
Perfect	V-ing perfect
shouldn't I have cooed? shouldn't you have cooed? shouldn't he have cooed? shouldn't we have cooed? shouldn't you have cooed? shouldn't they have cooed?	shouldn't I have been cooing? shouldn't you have been cooing? shouldn't he have been cooing? shouldn't we have been cooing? shouldn't you have been cooing? shouldn't they have been cooing?