I could article you could article she could article we could article you could article they could article
Forma con V-ing
I could be articling you could be articling she could be articling we could be articling you could be articling they could be articling
Perfecto
I could have articled you could have articled she could have articled we could have articled you could have articled they could have articled
Perfecto con V-ing
I could have been articling you could have been articling she could have been articling we could have been articling you could have been articling they could have been articling
Negación
Forma simple
I could not article you could not article she could not article we could not article you could not article they could not article
Forma con V-ing
I could not be articling you could not be articling she could not be articling we could not be articling you could not be articling they could not be articling
Perfecto
I could not have articled you could not have articled she could not have articled we could not have articled you could not have articled they could not have articled
Perfecto con V-ing
I could not have been articling you could not have been articling she could not have been articling we could not have been articling you could not have been articling they could not have been articling
Forma interrogativa
Forma simple
could I article? could you article? could she article? could we article? could you article? could they article?
Forma con V-ing
could I be articling? could you be articling? could she be articling? could we be articling? could you be articling? could they be articling?
Perfecto
could I have articled? could you have articled? could she have articled? could we have articled? could you have articled? could they have articled?
Perfecto con V-ing
could I have been articling? could you have been articling? could she have been articling? could we have been articling? could you have been articling? could they have been articling?
Forma interro-negativa
Forma simple
could I not article? could you not article? could she not article? could we not article? could you not article? could they not article?
Forma con V-ing
could I not be articling? could you not be articling? could she not be articling? could we not be articling? could you not be articling? could they not be articling?
Perfecto
could I not have articled? could you not have articled? could she not have articled? could we not have articled? could you not have articled? could they not have articled?
Perfecto con V-ing
could I not have been articling? could you not have been articling? could she not have been articling? could we not have been articling? could you not have been articling? could they not have been articling?