English verb conjugation
SHOULD KO

Regular verb: ko - koed - koed

Affirmation

Simple form	V-ing form
I'd ko you'd ko he'd ko we'd ko you'd ko they'd ko	I'd be koing you'd be koing he'd be koing we'd be koing you'd be koing they'd be koing
Perfect	V-ing perfect
I should've koed you should've koed he should've koed we should've koed you should've koed they should've koed	I should've been koing you should've been koing he should've been koing we should've been koing you should've been koing they should've been koing

Negation

Simple form	V-ing form
I shouldn't ko you shouldn't ko he shouldn't ko we shouldn't ko you shouldn't ko they shouldn't ko	I shouldn't be koing you shouldn't be koing he shouldn't be koing we shouldn't be koing you shouldn't be koing they shouldn't be koing
Perfect	V-ing perfect
I shouldn't have koed you shouldn't have koed he shouldn't have koed we shouldn't have koed you shouldn't have koed they shouldn't have koed	I shouldn't have been koing you shouldn't have been koing he shouldn't have been koing we shouldn't have been koing you shouldn't have been koing they shouldn't have been koing

Interrogative form

Simple form	V-ing form
should I ko? should you ko? should he ko? should we ko? should you ko? should they ko?	should I be koing? should you be koing? should he be koing? should we be koing? should you be koing? should they be koing?
Perfect	V-ing perfect
should I have koed? should you have koed? should he have koed? should we have koed? should you have koed? should they have koed?	should I have been koing? should you have been koing? should he have been koing? should we have been koing? should you have been koing? should they have been koing?

Interro-negative form

Simple form	V-ing form
shouldn't I ko? shouldn't you ko? shouldn't he ko? shouldn't we ko? shouldn't you ko? shouldn't they ko?	shouldn't I be koing? shouldn't you be koing? shouldn't he be koing? shouldn't we be koing? shouldn't you be koing? shouldn't they be koing?
Perfect	V-ing perfect
shouldn't I have koed? shouldn't you have koed? shouldn't he have koed? shouldn't we have koed? shouldn't you have koed? shouldn't they have koed?	shouldn't I have been koing? shouldn't you have been koing? shouldn't he have been koing? shouldn't we have been koing? shouldn't you have been koing? shouldn't they have been koing?