could protocol
Verbo regular: protocol - protocoled- protocoled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could protocol
you could protocol
he could protocol
we could protocol
you could protocol
they could protocol 	I could be protocoling
you could be protocoling
he could be protocoling
we could be protocoling
you could be protocoling
they could be protocoling	I could have protocoled
you could have protocoled
he could have protocoled
we could have protocoled
you could have protocoled
they could have protocoled	I could have been protocoling
you could have been protocoling
he could have been protocoling
we could have been protocoling
you could have been protocoling
they could have been protocoling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not protocol
you could not protocol
he could not protocol
we could not protocol
you could not protocol
they could not protocol 	I could not be protocoling
you could not be protocoling
he could not be protocoling
we could not be protocoling
you could not be protocoling
they could not be protocoling	I could not have protocoled
you could not have protocoled
he could not have protocoled
we could not have protocoled
you could not have protocoled
they could not have protocoled	I could not have been protocoling
you could not have been protocoling
he could not have been protocoling
we could not have been protocoling
you could not have been protocoling
they could not have been protocoling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I protocol?
could you protocol?
could he protocol?
could we protocol?
could you protocol?
could they protocol? 	could I be protocoling?
could you be protocoling?
could he be protocoling?
could we be protocoling?
could you be protocoling?
could they be protocoling? 	could I have protocoled?
could you have protocoled?
could he have protocoled?
could we have protocoled?
could you have protocoled?
could they have protocoled? 	could I have been protocoling?
could you have been protocoling?
could he have been protocoling?
could we have been protocoling?
could you have been protocoling?
could they have been protocoling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not protocol?
could you not protocol?
could he not protocol?
could we not protocol?
could you not protocol?
could they not protocol? 	could I not be protocoling?
could you not be protocoling?
could he not be protocoling?
could we not be protocoling?
could you not be protocoling?
could they not be protocoling? 	could I not have protocoled?
could you not have protocoled?
could he not have protocoled?
could we not have protocoled?
could you not have protocoled?
could they not have protocoled? 	could I not have been protocoling?
could you not have been protocoling?
could he not have been protocoling?
could we not have been protocoling?
could you not have been protocoling?
could they not have been protocoling?