should gum
Verbo regular: gum - gummed- gummed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should gum
you should gum
he should gum
we should gum
you should gum
they should gum 	I should be gumming
you should be gumming
he should be gumming
we should be gumming
you should be gumming
they should be gumming	I should have gummed
you should have gummed
he should have gummed
we should have gummed
you should have gummed
they should have gummed	I should have been gumming
you should have been gumming
he should have been gumming
we should have been gumming
you should have been gumming
they should have been gumming	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not gum
you should not gum
he should not gum
we should not gum
you should not gum
they should not gum 	I should not be gumming
you should not be gumming
he should not be gumming
we should not be gumming
you should not be gumming
they should not be gumming	I should not have gummed
you should not have gummed
he should not have gummed
we should not have gummed
you should not have gummed
they should not have gummed	I should not have been gumming
you should not have been gumming
he should not have been gumming
we should not have been gumming
you should not have been gumming
they should not have been gumming	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I gum?
should you gum?
should he gum?
should we gum?
should you gum?
should they gum? 	should I be gumming?
should you be gumming?
should he be gumming?
should we be gumming?
should you be gumming?
should they be gumming? 	should I have gummed?
should you have gummed?
should he have gummed?
should we have gummed?
should you have gummed?
should they have gummed? 	should I have been gumming?
should you have been gumming?
should he have been gumming?
should we have been gumming?
should you have been gumming?
should they have been gumming? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not gum?
should you not gum?
should he not gum?
should we not gum?
should you not gum?
should they not gum? 	should I not be gumming?
should you not be gumming?
should he not be gumming?
should we not be gumming?
should you not be gumming?
should they not be gumming? 	should I not have gummed?
should you not have gummed?
should he not have gummed?
should we not have gummed?
should you not have gummed?
should they not have gummed? 	should I not have been gumming?
should you not have been gumming?
should he not have been gumming?
should we not have been gumming?
should you not have been gumming?
should they not have been gumming?