should invade
Regular verb: invade - invaded- invaded

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not invade
you should not invade
he should not invade
we should not invade
you should not invade
they should not invade 	I should not be invading
you should not be invading
he should not be invading
we should not be invading
you should not be invading
they should not be invading	I should not have invaded
you should not have invaded
he should not have invaded
we should not have invaded
you should not have invaded
they should not have invaded	I should not have been invading
you should not have been invading
he should not have been invading
we should not have been invading
you should not have been invading
they should not have been invading	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I invade?
should you invade?
should he invade?
should we invade?
should you invade?
should they invade? 	should I be invading?
should you be invading?
should he be invading?
should we be invading?
should you be invading?
should they be invading? 	should I have invaded?
should you have invaded?
should he 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 he 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 	Perfect 	V-ing perfect 	
should I not invade?
should you not invade?
should he not invade?
should we not invade?
should you not invade?
should they not invade? 	should I not be invading?
should you not be invading?
should he not be invading?
should we not be invading?
should you not be invading?
should they not be invading? 	should I not have invaded?
should you not have invaded?
should he not have invaded?
should we not have invaded?
should you not have invaded?
should they not have invaded? 	should I not have been invading?
should you not have been invading?
should he not have been invading?
should we not have been invading?
should you not have been invading?
should they not have been invading?