can invade
Regular verb: invade - invaded- invaded

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't invade
you can't invade
he can't invade
we can't invade
you can't invade
they can't invade 	I can't be invading
you can't be invading
he can't be invading
we can't be invading
you can't be invading
they can't be invading	I can't have invaded
you can't have invaded
he can't have invaded
we can't have invaded
you can't have invaded
they can't have invaded	I can't have been invading
you can't have been invading
he can't have been invading
we can't have been invading
you can't have been invading
they can't have been invading	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I invade?
can you invade?
can he invade?
can we invade?
can you invade?
can they invade? 	can I be invading?
can you be invading?
can he be invading?
can we be invading?
can you be invading?
can they be invading? 	can I have invaded?
can you have invaded?
can he have invaded?
can we have invaded?
can you have invaded?
can they have invaded? 	can I have been invading?
can you have been invading?
can he have been invading?
can we have been invading?
can you have been invading?
can they have been invading? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I invade?
can't you invade?
can't he invade?
can't we invade?
can't you invade?
can't they invade? 	can't I be invading?
can't you be invading?
can't he be invading?
can't we be invading?
can't you be invading?
can't they be invading? 	can't I have invaded?
can't you have invaded?
can't he have invaded?
can't we have invaded?
can't you have invaded?
can't they have invaded? 	can't I have been invading?
can't you have been invading?
can't he have been invading?
can't we have been invading?
can't you have been invading?
can't they have been invading?