English verb conjugation
SHOULD OPPUGN

Regular verb: oppugn - oppugned - oppugned

Affirmation

Simple form	V-ing form
I'd oppugn you'd oppugn she'd oppugn we'd oppugn you'd oppugn they'd oppugn	I'd be oppugning you'd be oppugning she'd be oppugning we'd be oppugning you'd be oppugning they'd be oppugning
Perfect	V-ing perfect
I should've oppugned you should've oppugned she should've oppugned we should've oppugned you should've oppugned they should've oppugned	I should've been oppugning you should've been oppugning she should've been oppugning we should've been oppugning you should've been oppugning they should've been oppugning

Negation

Simple form	V-ing form
I shouldn't oppugn you shouldn't oppugn she shouldn't oppugn we shouldn't oppugn you shouldn't oppugn they shouldn't oppugn	I shouldn't be oppugning you shouldn't be oppugning she shouldn't be oppugning we shouldn't be oppugning you shouldn't be oppugning they shouldn't be oppugning
Perfect	V-ing perfect
I shouldn't have oppugned you shouldn't have oppugned she shouldn't have oppugned we shouldn't have oppugned you shouldn't have oppugned they shouldn't have oppugned	I shouldn't have been oppugning you shouldn't have been oppugning she shouldn't have been oppugning we shouldn't have been oppugning you shouldn't have been oppugning they shouldn't have been oppugning

Interrogative form

Simple form	V-ing form
should I oppugn? should you oppugn? should she oppugn? should we oppugn? should you oppugn? should they oppugn?	should I be oppugning? should you be oppugning? should she be oppugning? should we be oppugning? should you be oppugning? should they be oppugning?
Perfect	V-ing perfect
should I have oppugned? should you have oppugned? should she have oppugned? should we have oppugned? should you have oppugned? should they have oppugned?	should I have been oppugning? should you have been oppugning? should she have been oppugning? should we have been oppugning? should you have been oppugning? should they have been oppugning?

Interro-negative form

Simple form	V-ing form
shouldn't I oppugn? shouldn't you oppugn? shouldn't she oppugn? shouldn't we oppugn? shouldn't you oppugn? shouldn't they oppugn?	shouldn't I be oppugning? shouldn't you be oppugning? shouldn't she be oppugning? shouldn't we be oppugning? shouldn't you be oppugning? shouldn't they be oppugning?
Perfect	V-ing perfect
shouldn't I have oppugned? shouldn't you have oppugned? shouldn't she have oppugned? shouldn't we have oppugned? shouldn't you have oppugned? shouldn't they have oppugned?	shouldn't I have been oppugning? shouldn't you have been oppugning? shouldn't she have been oppugning? shouldn't we have been oppugning? shouldn't you have been oppugning? shouldn't they have been oppugning?