could revel
Regular verb: revel - revelled- revelled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could revel
you could revel
he could revel
we could revel
you could revel
they could revel 	I could be revelling
you could be revelling
he could be revelling
we could be revelling
you could be revelling
they could be revelling	I could have revelled
you could have revelled
he could have revelled
we could have revelled
you could have revelled
they could have revelled	I could have been revelling
you could have been revelling
he could have been revelling
we could have been revelling
you could have been revelling
they could have been revelling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't revel
you couldn't revel
he couldn't revel
we couldn't revel
you couldn't revel
they couldn't revel 	I couldn't be revelling
you couldn't be revelling
he couldn't be revelling
we couldn't be revelling
you couldn't be revelling
they couldn't be revelling	I couldn't have revelled
you couldn't have revelled
he couldn't have revelled
we couldn't have revelled
you couldn't have revelled
they couldn't have revelled	I couldn't have been revelling
you couldn't have been revelling
he couldn't have been revelling
we couldn't have been revelling
you couldn't have been revelling
they couldn't have been revelling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I revel?
could you revel?
could he revel?
could we revel?
could you revel?
could they revel? 	could I be revelling?
could you be revelling?
could he be revelling?
could we be revelling?
could you be revelling?
could they be revelling? 	could I have revelled?
could you have revelled?
could he have revelled?
could we have revelled?
could you have revelled?
could they have revelled? 	could I have been revelling?
could you have been revelling?
could he have been revelling?
could we have been revelling?
could you have been revelling?
could they have been revelling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I revel?
couldn't you revel?
couldn't he revel?
couldn't we revel?
couldn't you revel?
couldn't they revel? 	couldn't I be revelling?
couldn't you be revelling?
couldn't he be revelling?
couldn't we be revelling?
couldn't you be revelling?
couldn't they be revelling? 	couldn't I have revelled?
couldn't you have revelled?
couldn't he have revelled?
couldn't we have revelled?
couldn't you have revelled?
couldn't they have revelled? 	couldn't I have been revelling?
couldn't you have been revelling?
couldn't he have been revelling?
couldn't we have been revelling?
couldn't you have been revelling?
couldn't they have been revelling?