I can stifle you can stifle she can stifle we can stifle you can stifle they can stifle
Forma con V-ing
I can be stifling you can be stifling she can be stifling we can be stifling you can be stifling they can be stifling
Perfecto
I can have stifled you can have stifled she can have stifled we can have stifled you can have stifled they can have stifled
Perfecto con V-ing
I can have been stifling you can have been stifling she can have been stifling we can have been stifling you can have been stifling they can have been stifling
Negación
Forma simple
I cannot stifle you cannot stifle she cannot stifle we cannot stifle you cannot stifle they cannot stifle
Forma con V-ing
I cannot be stifling you cannot be stifling she cannot be stifling we cannot be stifling you cannot be stifling they cannot be stifling
Perfecto
I cannot have stifled you cannot have stifled she cannot have stifled we cannot have stifled you cannot have stifled they cannot have stifled
Perfecto con V-ing
I cannot have been stifling you cannot have been stifling she cannot have been stifling we cannot have been stifling you cannot have been stifling they cannot have been stifling
Forma interrogativa
Forma simple
can I stifle? can you stifle? can she stifle? can we stifle? can you stifle? can they stifle?
Forma con V-ing
can I be stifling? can you be stifling? can she be stifling? can we be stifling? can you be stifling? can they be stifling?
Perfecto
can I have stifled? can you have stifled? can she have stifled? can we have stifled? can you have stifled? can they have stifled?
Perfecto con V-ing
can I have been stifling? can you have been stifling? can she have been stifling? can we have been stifling? can you have been stifling? can they have been stifling?
Forma interro-negativa
Forma simple
can I not stifle? can you not stifle? can she not stifle? can we not stifle? can you not stifle? can they not stifle?
Forma con V-ing
can I not be stifling? can you not be stifling? can she not be stifling? can we not be stifling? can you not be stifling? can they not be stifling?
Perfecto
can I not have stifled? can you not have stifled? can she not have stifled? can we not have stifled? can you not have stifled? can they not have stifled?
Perfecto con V-ing
can I not have been stifling? can you not have been stifling? can she not have been stifling? can we not have been stifling? can you not have been stifling? can they not have been stifling?