I can double you can double he can double we can double you can double they can double
Forma con V-ing
I can be doubling you can be doubling he can be doubling we can be doubling you can be doubling they can be doubling
Perfecto
I can have doubled you can have doubled he can have doubled we can have doubled you can have doubled they can have doubled
Perfecto con V-ing
I can have been doubling you can have been doubling he can have been doubling we can have been doubling you can have been doubling they can have been doubling
Negación
Forma simple
I can't double you can't double he can't double we can't double you can't double they can't double
Forma con V-ing
I can't be doubling you can't be doubling he can't be doubling we can't be doubling you can't be doubling they can't be doubling
Perfecto
I can't have doubled you can't have doubled he can't have doubled we can't have doubled you can't have doubled they can't have doubled
Perfecto con V-ing
I can't have been doubling you can't have been doubling he can't have been doubling we can't have been doubling you can't have been doubling they can't have been doubling
Forma interrogativa
Forma simple
can I double? can you double? can he double? can we double? can you double? can they double?
Forma con V-ing
can I be doubling? can you be doubling? can he be doubling? can we be doubling? can you be doubling? can they be doubling?
Perfecto
can I have doubled? can you have doubled? can he have doubled? can we have doubled? can you have doubled? can they have doubled?
Perfecto con V-ing
can I have been doubling? can you have been doubling? can he have been doubling? can we have been doubling? can you have been doubling? can they have been doubling?
Forma interro-negativa
Forma simple
can't I double? can't you double? can't he double? can't we double? can't you double? can't they double?
Forma con V-ing
can't I be doubling? can't you be doubling? can't he be doubling? can't we be doubling? can't you be doubling? can't they be doubling?
Perfecto
can't I have doubled? can't you have doubled? can't he have doubled? can't we have doubled? can't you have doubled? can't they have doubled?
Perfecto con V-ing
can't I have been doubling? can't you have been doubling? can't he have been doubling? can't we have been doubling? can't you have been doubling? can't they have been doubling?