English verb conjugation
SHOULD TUBE

Regular verb: tube - tubed - tubed

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Negation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?

Interro-negative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?