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