could invade
Verbo regular: invade - invaded- invaded

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could invade
you could invade
she could invade
we could invade
you could invade
they could invade 	I could be invading
you could be invading
she could be invading
we could be invading
you could be invading
they could be invading	I could have invaded
you could have invaded
she could have invaded
we could have invaded
you could have invaded
they could have invaded	I could have been invading
you could have been invading
she could have been invading
we could have been invading
you could have been invading
they could have been invading	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't invade
you couldn't invade
she couldn't invade
we couldn't invade
you couldn't invade
they couldn't invade 	I couldn't be invading
you couldn't be invading
she couldn't be invading
we couldn't be invading
you couldn't be invading
they couldn't be invading	I couldn't have invaded
you couldn't have invaded
she couldn't have invaded
we couldn't have invaded
you couldn't have invaded
they couldn't have invaded	I couldn't have been invading
you couldn't have been invading
she couldn't have been invading
we couldn't have been invading
you couldn't have been invading
they couldn't have been invading	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I invade?
could you invade?
could she invade?
could we invade?
could you invade?
could they invade? 	could I be invading?
could you be invading?
could she be invading?
could we be invading?
could you be invading?
could they be invading? 	could I have invaded?
could you have invaded?
could she have invaded?
could we have invaded?
could you have invaded?
could they have invaded? 	could I have been invading?
could you have been invading?
could she have been invading?
could we have been invading?
could you have been invading?
could they have been invading? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I invade?
couldn't you invade?
couldn't she invade?
couldn't we invade?
couldn't you invade?
couldn't they invade? 	couldn't I be invading?
couldn't you be invading?
couldn't she be invading?
couldn't we be invading?
couldn't you be invading?
couldn't they be invading? 	couldn't I have invaded?
couldn't you have invaded?
couldn't she have invaded?
couldn't we have invaded?
couldn't you have invaded?
couldn't they have invaded? 	couldn't I have been invading?
couldn't you have been invading?
couldn't she have been invading?
couldn't we have been invading?
couldn't you have been invading?
couldn't they have been invading?