ought to invade
Regular verb: invade - invaded- invaded

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

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

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

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