English verb conjugation
SHOULD GUM

Regular verb: gum - gummed - gummed

Affirmation

Simple form	V-ing form
I'd gum you'd gum he'd gum we'd gum you'd gum they'd gum	I'd be gumming you'd be gumming he'd be gumming we'd be gumming you'd be gumming they'd be gumming
Perfect	V-ing perfect
I should've gummed you should've gummed he should've gummed we should've gummed you should've gummed they should've gummed	I should've been gumming you should've been gumming he should've been gumming we should've been gumming you should've been gumming they should've been gumming

Negation

Simple form	V-ing form
I shouldn't gum you shouldn't gum he shouldn't gum we shouldn't gum you shouldn't gum they shouldn't gum	I shouldn't be gumming you shouldn't be gumming he shouldn't be gumming we shouldn't be gumming you shouldn't be gumming they shouldn't be gumming
Perfect	V-ing perfect
I shouldn't have gummed you shouldn't have gummed he shouldn't have gummed we shouldn't have gummed you shouldn't have gummed they shouldn't have gummed	I shouldn't have been gumming you shouldn't have been gumming he shouldn't have been gumming we shouldn't have been gumming you shouldn't have been gumming they shouldn't have been gumming

Interrogative form

Simple form	V-ing form
should I gum? should you gum? should he gum? should we gum? should you gum? should they gum?	should I be gumming? should you be gumming? should he be gumming? should we be gumming? should you be gumming? should they be gumming?
Perfect	V-ing perfect
should I have gummed? should you have gummed? should he have gummed? should we have gummed? should you have gummed? should they have gummed?	should I have been gumming? should you have been gumming? should he have been gumming? should we have been gumming? should you have been gumming? should they have been gumming?

Interro-negative form

Simple form	V-ing form
shouldn't I gum? shouldn't you gum? shouldn't he gum? shouldn't we gum? shouldn't you gum? shouldn't they gum?	shouldn't I be gumming? shouldn't you be gumming? shouldn't he be gumming? shouldn't we be gumming? shouldn't you be gumming? shouldn't they be gumming?
Perfect	V-ing perfect
shouldn't I have gummed? shouldn't you have gummed? shouldn't he have gummed? shouldn't we have gummed? shouldn't you have gummed? shouldn't they have gummed?	shouldn't I have been gumming? shouldn't you have been gumming? shouldn't he have been gumming? shouldn't we have been gumming? shouldn't you have been gumming? shouldn't they have been gumming?