English verb conjugation
SHOULD INVADE

Regular verb: invade - invaded - invaded

Affirmation

Simple form	V-ing form
I'd invade you'd invade she'd invade we'd invade you'd invade they'd invade	I'd be invading you'd be invading she'd be invading we'd be invading you'd be invading they'd be invading
Perfect	V-ing perfect
I should've invaded you should've invaded she should've invaded we should've invaded you should've invaded they should've invaded	I should've been invading you should've been invading she should've been invading we should've been invading you should've been invading they should've been invading

Negation

Simple form	V-ing form
I shouldn't invade you shouldn't invade she shouldn't invade we shouldn't invade you shouldn't invade they shouldn't invade	I shouldn't be invading you shouldn't be invading she shouldn't be invading we shouldn't be invading you shouldn't be invading they shouldn't be invading
Perfect	V-ing perfect
I shouldn't have invaded you shouldn't have invaded she shouldn't have invaded we shouldn't have invaded you shouldn't have invaded they shouldn't have invaded	I shouldn't have been invading you shouldn't have been invading she shouldn't have been invading we shouldn't have been invading you shouldn't have been invading they shouldn't have been invading

Interrogative form

Simple form	V-ing form
should I invade? should you invade? should she invade? should we invade? should you invade? should they invade?	should I be invading? should you be invading? should she be invading? should we be invading? should you be invading? should they be invading?
Perfect	V-ing perfect
should I have invaded? should you have invaded? should she have invaded? should we have invaded? should you have invaded? should they have invaded?	should I have been invading? should you have been invading? should she have been invading? should we have been invading? should you have been invading? should they have been invading?

Interro-negative form

Simple form	V-ing form
shouldn't I invade? shouldn't you invade? shouldn't she invade? shouldn't we invade? shouldn't you invade? shouldn't they invade?	shouldn't I be invading? shouldn't you be invading? shouldn't she be invading? shouldn't we be invading? shouldn't you be invading? shouldn't they be invading?
Perfect	V-ing perfect
shouldn't I have invaded? shouldn't you have invaded? shouldn't she have invaded? shouldn't we have invaded? shouldn't you have invaded? shouldn't they have invaded?	shouldn't I have been invading? shouldn't you have been invading? shouldn't she have been invading? shouldn't we have been invading? shouldn't you have been invading? shouldn't they have been invading?