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
he could protect
we could protect
you could protect
they could protect 	I could be protecting
you could be protecting
he could be protecting
we could be protecting
you could be protecting
they could be protecting	I could have protected
you could have protected
he 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
he 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
he 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
he 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
he 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
he 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 he protect?
could we protect?
could you protect?
could they protect? 	could I be protecting?
could you be protecting?
could he be protecting?
could we be protecting?
could you be protecting?
could they be protecting? 	could I have protected?
could you have protected?
could he 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 he 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 he 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 he 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 he 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 he not have been protecting?
could we not have been protecting?
could you not have been protecting?
could they not have been protecting?