should tube
Verbo regular: tube - tubed- tubed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should tube
you should tube
he should tube
we should tube
you should tube
they should tube 	I should be tubing
you should be tubing
he should be tubing
we should be tubing
you should be tubing
they should be tubing	I should have tubed
you should have tubed
he should have tubed
we should have tubed
you should have tubed
they should have tubed	I should have been tubing
you should have been tubing
he should have been tubing
we should have been tubing
you should have been tubing
they should have been tubing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should not tube
you should not tube
he should not tube
we should not tube
you should not tube
they should not tube 	I should not be tubing
you should not be tubing
he should not be tubing
we should not be tubing
you should not be tubing
they should not be tubing	I should not have tubed
you should not have tubed
he should not have tubed
we should not have tubed
you should not have tubed
they should not have tubed	I should not have been tubing
you should not have been tubing
he should not have been tubing
we should not have been tubing
you should not have been tubing
they should not have been tubing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I tube?
should you tube?
should he tube?
should we tube?
should you tube?
should they tube? 	should I be tubing?
should you be tubing?
should he be tubing?
should we be tubing?
should you be tubing?
should they be tubing? 	should I have tubed?
should you have tubed?
should he have tubed?
should we have tubed?
should you have tubed?
should they have tubed? 	should I have been tubing?
should you have been tubing?
should he have been tubing?
should we have been tubing?
should you have been tubing?
should they have been tubing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I not tube?
should you not tube?
should he not tube?
should we not tube?
should you not tube?
should they not tube? 	should I not be tubing?
should you not be tubing?
should he not be tubing?
should we not be tubing?
should you not be tubing?
should they not be tubing? 	should I not have tubed?
should you not have tubed?
should he not have tubed?
should we not have tubed?
should you not have tubed?
should they not have tubed? 	should I not have been tubing?
should you not have been tubing?
should he not have been tubing?
should we not have been tubing?
should you not have been tubing?
should they not have been tubing?