could refill
Verbo regular: refill - refilled- refilled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could refill
you could refill
she could refill
we could refill
you could refill
they could refill 	I could be refilling
you could be refilling
she could be refilling
we could be refilling
you could be refilling
they could be refilling	I could have refilled
you could have refilled
she could have refilled
we could have refilled
you could have refilled
they could have refilled	I could have been refilling
you could have been refilling
she could have been refilling
we could have been refilling
you could have been refilling
they could have been refilling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not refill
you could not refill
she could not refill
we could not refill
you could not refill
they could not refill 	I could not be refilling
you could not be refilling
she could not be refilling
we could not be refilling
you could not be refilling
they could not be refilling	I could not have refilled
you could not have refilled
she could not have refilled
we could not have refilled
you could not have refilled
they could not have refilled	I could not have been refilling
you could not have been refilling
she could not have been refilling
we could not have been refilling
you could not have been refilling
they could not have been refilling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I refill?
could you refill?
could she refill?
could we refill?
could you refill?
could they refill? 	could I be refilling?
could you be refilling?
could she be refilling?
could we be refilling?
could you be refilling?
could they be refilling? 	could I have refilled?
could you have refilled?
could she have refilled?
could we have refilled?
could you have refilled?
could they have refilled? 	could I have been refilling?
could you have been refilling?
could she have been refilling?
could we have been refilling?
could you have been refilling?
could they have been refilling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not refill?
could you not refill?
could she not refill?
could we not refill?
could you not refill?
could they not refill? 	could I not be refilling?
could you not be refilling?
could she not be refilling?
could we not be refilling?
could you not be refilling?
could they not be refilling? 	could I not have refilled?
could you not have refilled?
could she not have refilled?
could we not have refilled?
could you not have refilled?
could they not have refilled? 	could I not have been refilling?
could you not have been refilling?
could she not have been refilling?
could we not have been refilling?
could you not have been refilling?
could they not have been refilling?