can suffer
Verbo regular: suffer - suffered- suffered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can suffer
you can suffer
she can suffer
we can suffer
you can suffer
they can suffer 	I can be suffering
you can be suffering
she can be suffering
we can be suffering
you can be suffering
they can be suffering	I can have suffered
you can have suffered
she can have suffered
we can have suffered
you can have suffered
they can have suffered	I can have been suffering
you can have been suffering
she can have been suffering
we can have been suffering
you can have been suffering
they can have been suffering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot suffer
you cannot suffer
she cannot suffer
we cannot suffer
you cannot suffer
they cannot suffer 	I cannot be suffering
you cannot be suffering
she cannot be suffering
we cannot be suffering
you cannot be suffering
they cannot be suffering	I cannot have suffered
you cannot have suffered
she cannot have suffered
we cannot have suffered
you cannot have suffered
they cannot have suffered	I cannot have been suffering
you cannot have been suffering
she cannot have been suffering
we cannot have been suffering
you cannot have been suffering
they cannot have been suffering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I suffer?
can you suffer?
can she suffer?
can we suffer?
can you suffer?
can they suffer? 	can I be suffering?
can you be suffering?
can she be suffering?
can we be suffering?
can you be suffering?
can they be suffering? 	can I have suffered?
can you have suffered?
can she have suffered?
can we have suffered?
can you have suffered?
can they have suffered? 	can I have been suffering?
can you have been suffering?
can she have been suffering?
can we have been suffering?
can you have been suffering?
can they have been suffering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not suffer?
can you not suffer?
can she not suffer?
can we not suffer?
can you not suffer?
can they not suffer? 	can I not be suffering?
can you not be suffering?
can she not be suffering?
can we not be suffering?
can you not be suffering?
can they not be suffering? 	can I not have suffered?
can you not have suffered?
can she not have suffered?
can we not have suffered?
can you not have suffered?
can they not have suffered? 	can I not have been suffering?
can you not have been suffering?
can she not have been suffering?
can we not have been suffering?
can you not have been suffering?
can they not have been suffering?