could coffer
Regular verb: coffer - coffered- coffered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could coffer
you could coffer
she could coffer
we could coffer
you could coffer
they could coffer 	I could be coffering
you could be coffering
she could be coffering
we could be coffering
you could be coffering
they could be coffering	I could have coffered
you could have coffered
she could have coffered
we could have coffered
you could have coffered
they could have coffered	I could have been coffering
you could have been coffering
she could have been coffering
we could have been coffering
you could have been coffering
they could have been coffering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't coffer
you couldn't coffer
she couldn't coffer
we couldn't coffer
you couldn't coffer
they couldn't coffer 	I couldn't be coffering
you couldn't be coffering
she couldn't be coffering
we couldn't be coffering
you couldn't be coffering
they couldn't be coffering	I couldn't have coffered
you couldn't have coffered
she couldn't have coffered
we couldn't have coffered
you couldn't have coffered
they couldn't have coffered	I couldn't have been coffering
you couldn't have been coffering
she couldn't have been coffering
we couldn't have been coffering
you couldn't have been coffering
they couldn't have been coffering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I coffer?
could you coffer?
could she coffer?
could we coffer?
could you coffer?
could they coffer? 	could I be coffering?
could you be coffering?
could she be coffering?
could we be coffering?
could you be coffering?
could they be coffering? 	could I have coffered?
could you have coffered?
could she have coffered?
could we have coffered?
could you have coffered?
could they have coffered? 	could I have been coffering?
could you have been coffering?
could she have been coffering?
could we have been coffering?
could you have been coffering?
could they have been coffering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I coffer?
couldn't you coffer?
couldn't she coffer?
couldn't we coffer?
couldn't you coffer?
couldn't they coffer? 	couldn't I be coffering?
couldn't you be coffering?
couldn't she be coffering?
couldn't we be coffering?
couldn't you be coffering?
couldn't they be coffering? 	couldn't I have coffered?
couldn't you have coffered?
couldn't she have coffered?
couldn't we have coffered?
couldn't you have coffered?
couldn't they have coffered? 	couldn't I have been coffering?
couldn't you have been coffering?
couldn't she have been coffering?
couldn't we have been coffering?
couldn't you have been coffering?
couldn't they have been coffering?