I can vary you can vary she can vary we can vary you can vary they can vary
Forma con V-ing
I can be varying you can be varying she can be varying we can be varying you can be varying they can be varying
Perfecto
I can have varied you can have varied she can have varied we can have varied you can have varied they can have varied
Perfecto con V-ing
I can have been varying you can have been varying she can have been varying we can have been varying you can have been varying they can have been varying
Negación
Forma simple
I can't vary you can't vary she can't vary we can't vary you can't vary they can't vary
Forma con V-ing
I can't be varying you can't be varying she can't be varying we can't be varying you can't be varying they can't be varying
Perfecto
I can't have varied you can't have varied she can't have varied we can't have varied you can't have varied they can't have varied
Perfecto con V-ing
I can't have been varying you can't have been varying she can't have been varying we can't have been varying you can't have been varying they can't have been varying
Forma interrogativa
Forma simple
can I vary? can you vary? can she vary? can we vary? can you vary? can they vary?
Forma con V-ing
can I be varying? can you be varying? can she be varying? can we be varying? can you be varying? can they be varying?
Perfecto
can I have varied? can you have varied? can she have varied? can we have varied? can you have varied? can they have varied?
Perfecto con V-ing
can I have been varying? can you have been varying? can she have been varying? can we have been varying? can you have been varying? can they have been varying?
Forma interro-negativa
Forma simple
can't I vary? can't you vary? can't she vary? can't we vary? can't you vary? can't they vary?
Forma con V-ing
can't I be varying? can't you be varying? can't she be varying? can't we be varying? can't you be varying? can't they be varying?
Perfecto
can't I have varied? can't you have varied? can't she have varied? can't we have varied? can't you have varied? can't they have varied?
Perfecto con V-ing
can't I have been varying? can't you have been varying? can't she have been varying? can't we have been varying? can't you have been varying? can't they have been varying?