could antecede
Verbo regular: antecede - anteceded- anteceded

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could antecede
you could antecede
he could antecede
we could antecede
you could antecede
they could antecede 	I could be anteceding
you could be anteceding
he could be anteceding
we could be anteceding
you could be anteceding
they could be anteceding	I could have anteceded
you could have anteceded
he could have anteceded
we could have anteceded
you could have anteceded
they could have anteceded	I could have been anteceding
you could have been anteceding
he could have been anteceding
we could have been anteceding
you could have been anteceding
they could have been anteceding	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't antecede
you couldn't antecede
he couldn't antecede
we couldn't antecede
you couldn't antecede
they couldn't antecede 	I couldn't be anteceding
you couldn't be anteceding
he couldn't be anteceding
we couldn't be anteceding
you couldn't be anteceding
they couldn't be anteceding	I couldn't have anteceded
you couldn't have anteceded
he couldn't have anteceded
we couldn't have anteceded
you couldn't have anteceded
they couldn't have anteceded	I couldn't have been anteceding
you couldn't have been anteceding
he couldn't have been anteceding
we couldn't have been anteceding
you couldn't have been anteceding
they couldn't have been anteceding	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I antecede?
could you antecede?
could he antecede?
could we antecede?
could you antecede?
could they antecede? 	could I be anteceding?
could you be anteceding?
could he be anteceding?
could we be anteceding?
could you be anteceding?
could they be anteceding? 	could I have anteceded?
could you have anteceded?
could he have anteceded?
could we have anteceded?
could you have anteceded?
could they have anteceded? 	could I have been anteceding?
could you have been anteceding?
could he have been anteceding?
could we have been anteceding?
could you have been anteceding?
could they have been anteceding? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I antecede?
couldn't you antecede?
couldn't he antecede?
couldn't we antecede?
couldn't you antecede?
couldn't they antecede? 	couldn't I be anteceding?
couldn't you be anteceding?
couldn't he be anteceding?
couldn't we be anteceding?
couldn't you be anteceding?
couldn't they be anteceding? 	couldn't I have anteceded?
couldn't you have anteceded?
couldn't he have anteceded?
couldn't we have anteceded?
couldn't you have anteceded?
couldn't they have anteceded? 	couldn't I have been anteceding?
couldn't you have been anteceding?
couldn't he have been anteceding?
couldn't we have been anteceding?
couldn't you have been anteceding?
couldn't they have been anteceding?