I can perdure you can perdure she can perdure we can perdure you can perdure they can perdure
Forma con V-ing
I can be perduring you can be perduring she can be perduring we can be perduring you can be perduring they can be perduring
Perfecto
I can have perdured you can have perdured she can have perdured we can have perdured you can have perdured they can have perdured
Perfecto con V-ing
I can have been perduring you can have been perduring she can have been perduring we can have been perduring you can have been perduring they can have been perduring
Negación
Forma simple
I cannot perdure you cannot perdure she cannot perdure we cannot perdure you cannot perdure they cannot perdure
Forma con V-ing
I cannot be perduring you cannot be perduring she cannot be perduring we cannot be perduring you cannot be perduring they cannot be perduring
Perfecto
I cannot have perdured you cannot have perdured she cannot have perdured we cannot have perdured you cannot have perdured they cannot have perdured
Perfecto con V-ing
I cannot have been perduring you cannot have been perduring she cannot have been perduring we cannot have been perduring you cannot have been perduring they cannot have been perduring
Forma interrogativa
Forma simple
can I perdure? can you perdure? can she perdure? can we perdure? can you perdure? can they perdure?
Forma con V-ing
can I be perduring? can you be perduring? can she be perduring? can we be perduring? can you be perduring? can they be perduring?
Perfecto
can I have perdured? can you have perdured? can she have perdured? can we have perdured? can you have perdured? can they have perdured?
Perfecto con V-ing
can I have been perduring? can you have been perduring? can she have been perduring? can we have been perduring? can you have been perduring? can they have been perduring?
Forma interro-negativa
Forma simple
can I not perdure? can you not perdure? can she not perdure? can we not perdure? can you not perdure? can they not perdure?
Forma con V-ing
can I not be perduring? can you not be perduring? can she not be perduring? can we not be perduring? can you not be perduring? can they not be perduring?
Perfecto
can I not have perdured? can you not have perdured? can she not have perdured? can we not have perdured? can you not have perdured? can they not have perdured?
Perfecto con V-ing
can I not have been perduring? can you not have been perduring? can she not have been perduring? can we not have been perduring? can you not have been perduring? can they not have been perduring?