could rave
Regular verb: rave - raved- raved

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could rave
you could rave
he could rave
we could rave
you could rave
they could rave 	I could be raving
you could be raving
he could be raving
we could be raving
you could be raving
they could be raving	I could have raved
you could have raved
he could have raved
we could have raved
you could have raved
they could have raved	I could have been raving
you could have been raving
he could have been raving
we could have been raving
you could have been raving
they could have been raving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't rave
you couldn't rave
he couldn't rave
we couldn't rave
you couldn't rave
they couldn't rave 	I couldn't be raving
you couldn't be raving
he couldn't be raving
we couldn't be raving
you couldn't be raving
they couldn't be raving	I couldn't have raved
you couldn't have raved
he couldn't have raved
we couldn't have raved
you couldn't have raved
they couldn't have raved	I couldn't have been raving
you couldn't have been raving
he couldn't have been raving
we couldn't have been raving
you couldn't have been raving
they couldn't have been raving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I rave?
could you rave?
could he rave?
could we rave?
could you rave?
could they rave? 	could I be raving?
could you be raving?
could he be raving?
could we be raving?
could you be raving?
could they be raving? 	could I have raved?
could you have raved?
could he have raved?
could we have raved?
could you have raved?
could they have raved? 	could I have been raving?
could you have been raving?
could he have been raving?
could we have been raving?
could you have been raving?
could they have been raving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I rave?
couldn't you rave?
couldn't he rave?
couldn't we rave?
couldn't you rave?
couldn't they rave? 	couldn't I be raving?
couldn't you be raving?
couldn't he be raving?
couldn't we be raving?
couldn't you be raving?
couldn't they be raving? 	couldn't I have raved?
couldn't you have raved?
couldn't he have raved?
couldn't we have raved?
couldn't you have raved?
couldn't they have raved? 	couldn't I have been raving?
couldn't you have been raving?
couldn't he have been raving?
couldn't we have been raving?
couldn't you have been raving?
couldn't they have been raving?