could protect
Verbo regular: protect - protected- protected

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could protect
you could protect
she could protect
we could protect
you could protect
they could protect 	I could be protecting
you could be protecting
she could be protecting
we could be protecting
you could be protecting
they could be protecting	I could have protected
you could have protected
she could have protected
we could have protected
you could have protected
they could have protected	I could have been protecting
you could have been protecting
she could have been protecting
we could have been protecting
you could have been protecting
they could have been protecting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not protect
you could not protect
she could not protect
we could not protect
you could not protect
they could not protect 	I could not be protecting
you could not be protecting
she could not be protecting
we could not be protecting
you could not be protecting
they could not be protecting	I could not have protected
you could not have protected
she could not have protected
we could not have protected
you could not have protected
they could not have protected	I could not have been protecting
you could not have been protecting
she could not have been protecting
we could not have been protecting
you could not have been protecting
they could not have been protecting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I protect?
could you protect?
could she protect?
could we protect?
could you protect?
could they protect? 	could I be protecting?
could you be protecting?
could she be protecting?
could we be protecting?
could you be protecting?
could they be protecting? 	could I have protected?
could you have protected?
could she have protected?
could we have protected?
could you have protected?
could they have protected? 	could I have been protecting?
could you have been protecting?
could she have been protecting?
could we have been protecting?
could you have been protecting?
could they have been protecting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not protect?
could you not protect?
could she not protect?
could we not protect?
could you not protect?
could they not protect? 	could I not be protecting?
could you not be protecting?
could she not be protecting?
could we not be protecting?
could you not be protecting?
could they not be protecting? 	could I not have protected?
could you not have protected?
could she not have protected?
could we not have protected?
could you not have protected?
could they not have protected? 	could I not have been protecting?
could you not have been protecting?
could she not have been protecting?
could we not have been protecting?
could you not have been protecting?
could they not have been protecting?