could article
Verbo regular: article - articled- articled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could article
you could article
he could article
we could article
you could article
they could article 	I could be articling
you could be articling
he could be articling
we could be articling
you could be articling
they could be articling	I could have articled
you could have articled
he could have articled
we could have articled
you could have articled
they could have articled	I could have been articling
you could have been articling
he could have been articling
we could have been articling
you could have been articling
they could have been articling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't article
you couldn't article
he couldn't article
we couldn't article
you couldn't article
they couldn't article 	I couldn't be articling
you couldn't be articling
he couldn't be articling
we couldn't be articling
you couldn't be articling
they couldn't be articling	I couldn't have articled
you couldn't have articled
he couldn't have articled
we couldn't have articled
you couldn't have articled
they couldn't have articled	I couldn't have been articling
you couldn't have been articling
he couldn't have been articling
we couldn't have been articling
you couldn't have been articling
they couldn't have been articling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I article?
could you article?
could he article?
could we article?
could you article?
could they article? 	could I be articling?
could you be articling?
could he be articling?
could we be articling?
could you be articling?
could they be articling? 	could I have articled?
could you have articled?
could he have articled?
could we have articled?
could you have articled?
could they have articled? 	could I have been articling?
could you have been articling?
could he have been articling?
could we have been articling?
could you have been articling?
could they have been articling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I article?
couldn't you article?
couldn't he article?
couldn't we article?
couldn't you article?
couldn't they article? 	couldn't I be articling?
couldn't you be articling?
couldn't he be articling?
couldn't we be articling?
couldn't you be articling?
couldn't they be articling? 	couldn't I have articled?
couldn't you have articled?
couldn't he have articled?
couldn't we have articled?
couldn't you have articled?
couldn't they have articled? 	couldn't I have been articling?
couldn't you have been articling?
couldn't he have been articling?
couldn't we have been articling?
couldn't you have been articling?
couldn't they have been articling?