could endorse
Verbo regular: endorse - endorsed- endorsed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could endorse
you could endorse
he could endorse
we could endorse
you could endorse
they could endorse 	I could be endorsing
you could be endorsing
he could be endorsing
we could be endorsing
you could be endorsing
they could be endorsing	I could have endorsed
you could have endorsed
he could have endorsed
we could have endorsed
you could have endorsed
they could have endorsed	I could have been endorsing
you could have been endorsing
he could have been endorsing
we could have been endorsing
you could have been endorsing
they could have been endorsing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not endorse
you could not endorse
he could not endorse
we could not endorse
you could not endorse
they could not endorse 	I could not be endorsing
you could not be endorsing
he could not be endorsing
we could not be endorsing
you could not be endorsing
they could not be endorsing	I could not have endorsed
you could not have endorsed
he could not have endorsed
we could not have endorsed
you could not have endorsed
they could not have endorsed	I could not have been endorsing
you could not have been endorsing
he could not have been endorsing
we could not have been endorsing
you could not have been endorsing
they could not have been endorsing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I endorse?
could you endorse?
could he endorse?
could we endorse?
could you endorse?
could they endorse? 	could I be endorsing?
could you be endorsing?
could he be endorsing?
could we be endorsing?
could you be endorsing?
could they be endorsing? 	could I have endorsed?
could you have endorsed?
could he have endorsed?
could we have endorsed?
could you have endorsed?
could they have endorsed? 	could I have been endorsing?
could you have been endorsing?
could he have been endorsing?
could we have been endorsing?
could you have been endorsing?
could they have been endorsing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not endorse?
could you not endorse?
could he not endorse?
could we not endorse?
could you not endorse?
could they not endorse? 	could I not be endorsing?
could you not be endorsing?
could he not be endorsing?
could we not be endorsing?
could you not be endorsing?
could they not be endorsing? 	could I not have endorsed?
could you not have endorsed?
could he not have endorsed?
could we not have endorsed?
could you not have endorsed?
could they not have endorsed? 	could I not have been endorsing?
could you not have been endorsing?
could he not have been endorsing?
could we not have been endorsing?
could you not have been endorsing?
could they not have been endorsing?