should echo
Verbo regular: echo - echoed- echoed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should echo
you should echo
he should echo
we should echo
you should echo
they should echo 	I should be echoing
you should be echoing
he should be echoing
we should be echoing
you should be echoing
they should be echoing	I should have echoed
you should have echoed
he should have echoed
we should have echoed
you should have echoed
they should have echoed	I should have been echoing
you should have been echoing
he should have been echoing
we should have been echoing
you should have been echoing
they should have been echoing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not echo
you should not echo
he should not echo
we should not echo
you should not echo
they should not echo 	I should not be echoing
you should not be echoing
he should not be echoing
we should not be echoing
you should not be echoing
they should not be echoing	I should not have echoed
you should not have echoed
he should not have echoed
we should not have echoed
you should not have echoed
they should not have echoed	I should not have been echoing
you should not have been echoing
he should not have been echoing
we should not have been echoing
you should not have been echoing
they should not have been echoing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I echo?
should you echo?
should he echo?
should we echo?
should you echo?
should they echo? 	should I be echoing?
should you be echoing?
should he be echoing?
should we be echoing?
should you be echoing?
should they be echoing? 	should I have echoed?
should you have echoed?
should he have echoed?
should we have echoed?
should you have echoed?
should they have echoed? 	should I have been echoing?
should you have been echoing?
should he have been echoing?
should we have been echoing?
should you have been echoing?
should they have been echoing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not echo?
should you not echo?
should he not echo?
should we not echo?
should you not echo?
should they not echo? 	should I not be echoing?
should you not be echoing?
should he not be echoing?
should we not be echoing?
should you not be echoing?
should they not be echoing? 	should I not have echoed?
should you not have echoed?
should he not have echoed?
should we not have echoed?
should you not have echoed?
should they not have echoed? 	should I not have been echoing?
should you not have been echoing?
should he not have been echoing?
should we not have been echoing?
should you not have been echoing?
should they not have been echoing?