English verb conjugation
SHOULD COO

Regular verb: coo - cooed - cooed

Affirmation

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

Negation

Simple form	V-ing form
I should not coo you should not coo he should not coo we should not coo you should not coo they should not coo	I should not be cooing you should not be cooing he should not be cooing we should not be cooing you should not be cooing they should not be cooing
Perfect	V-ing perfect
I should not have cooed you should not have cooed he should not have cooed we should not have cooed you should not have cooed they should not have cooed	I should not have been cooing you should not have been cooing he should not have been cooing we should not have been cooing you should not have been cooing they should not 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
should I not coo? should you not coo? should he not coo? should we not coo? should you not coo? should they not coo?	should I not be cooing? should you not be cooing? should he not be cooing? should we not be cooing? should you not be cooing? should they not be cooing?
Perfect	V-ing perfect
should I not have cooed? should you not have cooed? should he not have cooed? should we not have cooed? should you not have cooed? should they not have cooed?	should I not have been cooing? should you not have been cooing? should he not have been cooing? should we not have been cooing? should you not have been cooing? should they not have been cooing?