could vent
Verbo regular: vent - vented- vented

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could vent
you could vent
he could vent
we could vent
you could vent
they could vent 	I could be venting
you could be venting
he could be venting
we could be venting
you could be venting
they could be venting	I could have vented
you could have vented
he could have vented
we could have vented
you could have vented
they could have vented	I could have been venting
you could have been venting
he could have been venting
we could have been venting
you could have been venting
they could have been venting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't vent
you couldn't vent
he couldn't vent
we couldn't vent
you couldn't vent
they couldn't vent 	I couldn't be venting
you couldn't be venting
he couldn't be venting
we couldn't be venting
you couldn't be venting
they couldn't be venting	I couldn't have vented
you couldn't have vented
he couldn't have vented
we couldn't have vented
you couldn't have vented
they couldn't have vented	I couldn't have been venting
you couldn't have been venting
he couldn't have been venting
we couldn't have been venting
you couldn't have been venting
they couldn't have been venting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I vent?
could you vent?
could he vent?
could we vent?
could you vent?
could they vent? 	could I be venting?
could you be venting?
could he be venting?
could we be venting?
could you be venting?
could they be venting? 	could I have vented?
could you have vented?
could he have vented?
could we have vented?
could you have vented?
could they have vented? 	could I have been venting?
could you have been venting?
could he have been venting?
could we have been venting?
could you have been venting?
could they have been venting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I vent?
couldn't you vent?
couldn't he vent?
couldn't we vent?
couldn't you vent?
couldn't they vent? 	couldn't I be venting?
couldn't you be venting?
couldn't he be venting?
couldn't we be venting?
couldn't you be venting?
couldn't they be venting? 	couldn't I have vented?
couldn't you have vented?
couldn't he have vented?
couldn't we have vented?
couldn't you have vented?
couldn't they have vented? 	couldn't I have been venting?
couldn't you have been venting?
couldn't he have been venting?
couldn't we have been venting?
couldn't you have been venting?
couldn't they have been venting?