could refund
Regular verb: refund - refunded- refunded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could refund
you could refund
he could refund
we could refund
you could refund
they could refund 	I could be refunding
you could be refunding
he could be refunding
we could be refunding
you could be refunding
they could be refunding	I could have refunded
you could have refunded
he could have refunded
we could have refunded
you could have refunded
they could have refunded	I could have been refunding
you could have been refunding
he could have been refunding
we could have been refunding
you could have been refunding
they could have been refunding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not refund
you could not refund
he could not refund
we could not refund
you could not refund
they could not refund 	I could not be refunding
you could not be refunding
he could not be refunding
we could not be refunding
you could not be refunding
they could not be refunding	I could not have refunded
you could not have refunded
he could not have refunded
we could not have refunded
you could not have refunded
they could not have refunded	I could not have been refunding
you could not have been refunding
he could not have been refunding
we could not have been refunding
you could not have been refunding
they could not have been refunding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I refund?
could you refund?
could he refund?
could we refund?
could you refund?
could they refund? 	could I be refunding?
could you be refunding?
could he be refunding?
could we be refunding?
could you be refunding?
could they be refunding? 	could I have refunded?
could you have refunded?
could he have refunded?
could we have refunded?
could you have refunded?
could they have refunded? 	could I have been refunding?
could you have been refunding?
could he have been refunding?
could we have been refunding?
could you have been refunding?
could they have been refunding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not refund?
could you not refund?
could he not refund?
could we not refund?
could you not refund?
could they not refund? 	could I not be refunding?
could you not be refunding?
could he not be refunding?
could we not be refunding?
could you not be refunding?
could they not be refunding? 	could I not have refunded?
could you not have refunded?
could he not have refunded?
could we not have refunded?
could you not have refunded?
could they not have refunded? 	could I not have been refunding?
could you not have been refunding?
could he not have been refunding?
could we not have been refunding?
could you not have been refunding?
could they not have been refunding?