could revenge
Regular verb: revenge - revenged- revenged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could revenge
you could revenge
he could revenge
we could revenge
you could revenge
they could revenge 	I could be revenging
you could be revenging
he could be revenging
we could be revenging
you could be revenging
they could be revenging	I could have revenged
you could have revenged
he could have revenged
we could have revenged
you could have revenged
they could have revenged	I could have been revenging
you could have been revenging
he could have been revenging
we could have been revenging
you could have been revenging
they could have been revenging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't revenge
you couldn't revenge
he couldn't revenge
we couldn't revenge
you couldn't revenge
they couldn't revenge 	I couldn't be revenging
you couldn't be revenging
he couldn't be revenging
we couldn't be revenging
you couldn't be revenging
they couldn't be revenging	I couldn't have revenged
you couldn't have revenged
he couldn't have revenged
we couldn't have revenged
you couldn't have revenged
they couldn't have revenged	I couldn't have been revenging
you couldn't have been revenging
he couldn't have been revenging
we couldn't have been revenging
you couldn't have been revenging
they couldn't have been revenging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I revenge?
could you revenge?
could he revenge?
could we revenge?
could you revenge?
could they revenge? 	could I be revenging?
could you be revenging?
could he be revenging?
could we be revenging?
could you be revenging?
could they be revenging? 	could I have revenged?
could you have revenged?
could he have revenged?
could we have revenged?
could you have revenged?
could they have revenged? 	could I have been revenging?
could you have been revenging?
could he have been revenging?
could we have been revenging?
could you have been revenging?
could they have been revenging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I revenge?
couldn't you revenge?
couldn't he revenge?
couldn't we revenge?
couldn't you revenge?
couldn't they revenge? 	couldn't I be revenging?
couldn't you be revenging?
couldn't he be revenging?
couldn't we be revenging?
couldn't you be revenging?
couldn't they be revenging? 	couldn't I have revenged?
couldn't you have revenged?
couldn't he have revenged?
couldn't we have revenged?
couldn't you have revenged?
couldn't they have revenged? 	couldn't I have been revenging?
couldn't you have been revenging?
couldn't he have been revenging?
couldn't we have been revenging?
couldn't you have been revenging?
couldn't they have been revenging?