English verb conjugation
SHOULD CAT

Regular verb: cat - cated - cated

Affirmation

Simple form	V-ing form
I'd cat you'd cat he'd cat we'd cat you'd cat they'd cat	I'd be cating you'd be cating he'd be cating we'd be cating you'd be cating they'd be cating
Perfect	V-ing perfect
I should've cated you should've cated he should've cated we should've cated you should've cated they should've cated	I should've been cating you should've been cating he should've been cating we should've been cating you should've been cating they should've been cating

Negation

Simple form	V-ing form
I shouldn't cat you shouldn't cat he shouldn't cat we shouldn't cat you shouldn't cat they shouldn't cat	I shouldn't be cating you shouldn't be cating he shouldn't be cating we shouldn't be cating you shouldn't be cating they shouldn't be cating
Perfect	V-ing perfect
I shouldn't have cated you shouldn't have cated he shouldn't have cated we shouldn't have cated you shouldn't have cated they shouldn't have cated	I shouldn't have been cating you shouldn't have been cating he shouldn't have been cating we shouldn't have been cating you shouldn't have been cating they shouldn't have been cating

Interrogative form

Simple form	V-ing form
should I cat? should you cat? should he cat? should we cat? should you cat? should they cat?	should I be cating? should you be cating? should he be cating? should we be cating? should you be cating? should they be cating?
Perfect	V-ing perfect
should I have cated? should you have cated? should he have cated? should we have cated? should you have cated? should they have cated?	should I have been cating? should you have been cating? should he have been cating? should we have been cating? should you have been cating? should they have been cating?

Interro-negative form

Simple form	V-ing form
shouldn't I cat? shouldn't you cat? shouldn't he cat? shouldn't we cat? shouldn't you cat? shouldn't they cat?	shouldn't I be cating? shouldn't you be cating? shouldn't he be cating? shouldn't we be cating? shouldn't you be cating? shouldn't they be cating?
Perfect	V-ing perfect
shouldn't I have cated? shouldn't you have cated? shouldn't he have cated? shouldn't we have cated? shouldn't you have cated? shouldn't they have cated?	shouldn't I have been cating? shouldn't you have been cating? shouldn't he have been cating? shouldn't we have been cating? shouldn't you have been cating? shouldn't they have been cating?