I can fax you can fax she can fax we can fax you can fax they can fax
Forma con V-ing
I can be faxing you can be faxing she can be faxing we can be faxing you can be faxing they can be faxing
Perfecto
I can have faxed you can have faxed she can have faxed we can have faxed you can have faxed they can have faxed
Perfecto con V-ing
I can have been faxing you can have been faxing she can have been faxing we can have been faxing you can have been faxing they can have been faxing
Negación
Forma simple
I cannot fax you cannot fax she cannot fax we cannot fax you cannot fax they cannot fax
Forma con V-ing
I cannot be faxing you cannot be faxing she cannot be faxing we cannot be faxing you cannot be faxing they cannot be faxing
Perfecto
I cannot have faxed you cannot have faxed she cannot have faxed we cannot have faxed you cannot have faxed they cannot have faxed
Perfecto con V-ing
I cannot have been faxing you cannot have been faxing she cannot have been faxing we cannot have been faxing you cannot have been faxing they cannot have been faxing
Forma interrogativa
Forma simple
can I fax? can you fax? can she fax? can we fax? can you fax? can they fax?
Forma con V-ing
can I be faxing? can you be faxing? can she be faxing? can we be faxing? can you be faxing? can they be faxing?
Perfecto
can I have faxed? can you have faxed? can she have faxed? can we have faxed? can you have faxed? can they have faxed?
Perfecto con V-ing
can I have been faxing? can you have been faxing? can she have been faxing? can we have been faxing? can you have been faxing? can they have been faxing?
Forma interro-negativa
Forma simple
can I not fax? can you not fax? can she not fax? can we not fax? can you not fax? can they not fax?
Forma con V-ing
can I not be faxing? can you not be faxing? can she not be faxing? can we not be faxing? can you not be faxing? can they not be faxing?
Perfecto
can I not have faxed? can you not have faxed? can she not have faxed? can we not have faxed? can you not have faxed? can they not have faxed?
Perfecto con V-ing
can I not have been faxing? can you not have been faxing? can she not have been faxing? can we not have been faxing? can you not have been faxing? can they not have been faxing?