English verb conjugation
SHOULD COMBAT

Regular verb: combat - combated - combated

Affirmation

Simple form	V-ing form
I'd combat you'd combat he'd combat we'd combat you'd combat they'd combat	I'd be combating you'd be combating he'd be combating we'd be combating you'd be combating they'd be combating
Perfect	V-ing perfect
I should've combated you should've combated he should've combated we should've combated you should've combated they should've combated	I should've been combating you should've been combating he should've been combating we should've been combating you should've been combating they should've been combating

Negation

Simple form	V-ing form
I shouldn't combat you shouldn't combat he shouldn't combat we shouldn't combat you shouldn't combat they shouldn't combat	I shouldn't be combating you shouldn't be combating he shouldn't be combating we shouldn't be combating you shouldn't be combating they shouldn't be combating
Perfect	V-ing perfect
I shouldn't have combated you shouldn't have combated he shouldn't have combated we shouldn't have combated you shouldn't have combated they shouldn't have combated	I shouldn't have been combating you shouldn't have been combating he shouldn't have been combating we shouldn't have been combating you shouldn't have been combating they shouldn't have been combating

Interrogative form

Simple form	V-ing form
should I combat? should you combat? should he combat? should we combat? should you combat? should they combat?	should I be combating? should you be combating? should he be combating? should we be combating? should you be combating? should they be combating?
Perfect	V-ing perfect
should I have combated? should you have combated? should he have combated? should we have combated? should you have combated? should they have combated?	should I have been combating? should you have been combating? should he have been combating? should we have been combating? should you have been combating? should they have been combating?

Interro-negative form

Simple form	V-ing form
shouldn't I combat? shouldn't you combat? shouldn't he combat? shouldn't we combat? shouldn't you combat? shouldn't they combat?	shouldn't I be combating? shouldn't you be combating? shouldn't he be combating? shouldn't we be combating? shouldn't you be combating? shouldn't they be combating?
Perfect	V-ing perfect
shouldn't I have combated? shouldn't you have combated? shouldn't he have combated? shouldn't we have combated? shouldn't you have combated? shouldn't they have combated?	shouldn't I have been combating? shouldn't you have been combating? shouldn't he have been combating? shouldn't we have been combating? shouldn't you have been combating? shouldn't they have been combating?