could rave
Regular verb: rave - raved- raved

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could rave
you could rave
she could rave
we could rave
you could rave
they could rave 	I could be raving
you could be raving
she could be raving
we could be raving
you could be raving
they could be raving	I could have raved
you could have raved
she 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
she 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
she 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
she 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
she 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
she 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 she rave?
could we rave?
could you rave?
could they rave? 	could I be raving?
could you be raving?
could she be raving?
could we be raving?
could you be raving?
could they be raving? 	could I have raved?
could you have raved?
could she 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 she 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 she 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 she 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 she 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 she have been raving?
couldn't we have been raving?
couldn't you have been raving?
couldn't they have been raving?