English verb conjugation
MAY TUBE

Regular verb: tube - tubed - tubed

Affirmation

Simple form	V-ing form
I may tube you may tube he may tube we may tube you may tube they may tube	I may be tubing you may be tubing he may be tubing we may be tubing you may be tubing they may be tubing
Perfect	V-ing perfect
I may have tubed you may have tubed he may have tubed we may have tubed you may have tubed they may have tubed	I may have been tubing you may have been tubing he may have been tubing we may have been tubing you may have been tubing they may have been tubing

Negation

Simple form	V-ing form
I may not tube you may not tube he may not tube we may not tube you may not tube they may not tube	I may not be tubing you may not be tubing he may not be tubing we may not be tubing you may not be tubing they may not be tubing
Perfect	V-ing perfect
I may not have tubed you may not have tubed he may not have tubed we may not have tubed you may not have tubed they may not have tubed	I may not have been tubing you may not have been tubing he may not have been tubing we may not have been tubing you may not have been tubing they may not have been tubing

Interrogative form

Simple form	V-ing form
may I tube? may you tube? may he tube? may we tube? may you tube? may they tube?	may I be tubing? may you be tubing? may he be tubing? may we be tubing? may you be tubing? may they be tubing?
Perfect	V-ing perfect
may I have tubed? may you have tubed? may he have tubed? may we have tubed? may you have tubed? may they have tubed?	may I have been tubing? may you have been tubing? may he have been tubing? may we have been tubing? may you have been tubing? may they have been tubing?

Interro-negative form

Simple form	V-ing form
may I not tube? may you not tube? may he not tube? may we not tube? may you not tube? may they not tube?	may I not be tubing? may you not be tubing? may he not be tubing? may we not be tubing? may you not be tubing? may they not be tubing?
Perfect	V-ing perfect
may I not have tubed? may you not have tubed? may he not have tubed? may we not have tubed? may you not have tubed? may they not have tubed?	may I not have been tubing? may you not have been tubing? may he not have been tubing? may we not have been tubing? may you not have been tubing? may they not have been tubing?