could refund
Verbo regular: refund - refunded- refunded

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't refund
you couldn't refund
he couldn't refund
we couldn't refund
you couldn't refund
they couldn't refund 	I couldn't be refunding
you couldn't be refunding
he couldn't be refunding
we couldn't be refunding
you couldn't be refunding
they couldn't be refunding	I couldn't have refunded
you couldn't have refunded
he couldn't have refunded
we couldn't have refunded
you couldn't have refunded
they couldn't have refunded	I couldn't have been refunding
you couldn't have been refunding
he couldn't have been refunding
we couldn't have been refunding
you couldn't have been refunding
they couldn't have been refunding	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I refund?
couldn't you refund?
couldn't he refund?
couldn't we refund?
couldn't you refund?
couldn't they refund? 	couldn't I be refunding?
couldn't you be refunding?
couldn't he be refunding?
couldn't we be refunding?
couldn't you be refunding?
couldn't they be refunding? 	couldn't I have refunded?
couldn't you have refunded?
couldn't he have refunded?
couldn't we have refunded?
couldn't you have refunded?
couldn't they have refunded? 	couldn't I have been refunding?
couldn't you have been refunding?
couldn't he have been refunding?
couldn't we have been refunding?
couldn't you have been refunding?
couldn't they have been refunding?