I can found you can found he can found we can found you can found they can found
Forma con V-ing
I can be founding you can be founding he can be founding we can be founding you can be founding they can be founding
Perfecto
I can have founded you can have founded he can have founded we can have founded you can have founded they can have founded
Perfecto con V-ing
I can have been founding you can have been founding he can have been founding we can have been founding you can have been founding they can have been founding
Negación
Forma simple
I cannot found you cannot found he cannot found we cannot found you cannot found they cannot found
Forma con V-ing
I cannot be founding you cannot be founding he cannot be founding we cannot be founding you cannot be founding they cannot be founding
Perfecto
I cannot have founded you cannot have founded he cannot have founded we cannot have founded you cannot have founded they cannot have founded
Perfecto con V-ing
I cannot have been founding you cannot have been founding he cannot have been founding we cannot have been founding you cannot have been founding they cannot have been founding
Forma interrogativa
Forma simple
can I found? can you found? can he found? can we found? can you found? can they found?
Forma con V-ing
can I be founding? can you be founding? can he be founding? can we be founding? can you be founding? can they be founding?
Perfecto
can I have founded? can you have founded? can he have founded? can we have founded? can you have founded? can they have founded?
Perfecto con V-ing
can I have been founding? can you have been founding? can he have been founding? can we have been founding? can you have been founding? can they have been founding?
Forma interro-negativa
Forma simple
can I not found? can you not found? can he not found? can we not found? can you not found? can they not found?
Forma con V-ing
can I not be founding? can you not be founding? can he not be founding? can we not be founding? can you not be founding? can they not be founding?
Perfecto
can I not have founded? can you not have founded? can he not have founded? can we not have founded? can you not have founded? can they not have founded?
Perfecto con V-ing
can I not have been founding? can you not have been founding? can he not have been founding? can we not have been founding? can you not have been founding? can they not have been founding?