English verb conjugation
MUST STICK

Irregular verb: stick - stuck - stuck

Affirmation

Simple form	V-ing form
I must stick you must stick he must stick we must stick you must stick they must stick	I must be sticking you must be sticking he must be sticking we must be sticking you must be sticking they must be sticking
Perfect	V-ing perfect
I must have stuck you must have stuck he must have stuck we must have stuck you must have stuck they must have stuck	I must have been sticking you must have been sticking he must have been sticking we must have been sticking you must have been sticking they must have been sticking

Negation

Simple form	V-ing form
I must not stick you must not stick he must not stick we must not stick you must not stick they must not stick	I must not be sticking you must not be sticking he must not be sticking we must not be sticking you must not be sticking they must not be sticking
Perfect	V-ing perfect
I must not have stuck you must not have stuck he must not have stuck we must not have stuck you must not have stuck they must not have stuck	I must not have been sticking you must not have been sticking he must not have been sticking we must not have been sticking you must not have been sticking they must not have been sticking

Interrogative form

Simple form	V-ing form
must I stick? must you stick? must he stick? must we stick? must you stick? must they stick?	must I be sticking? must you be sticking? must he be sticking? must we be sticking? must you be sticking? must they be sticking?
Perfect	V-ing perfect
must I have stuck? must you have stuck? must he have stuck? must we have stuck? must you have stuck? must they have stuck?	must I have been sticking? must you have been sticking? must he have been sticking? must we have been sticking? must you have been sticking? must they have been sticking?

Interro-negative form

Simple form	V-ing form
must I not stick? must you not stick? must he not stick? must we not stick? must you not stick? must they not stick?	must I not be sticking? must you not be sticking? must he not be sticking? must we not be sticking? must you not be sticking? must they not be sticking?
Perfect	V-ing perfect
must I not have stuck? must you not have stuck? must he not have stuck? must we not have stuck? must you not have stuck? must they not have stuck?	must I not have been sticking? must you not have been sticking? must he not have been sticking? must we not have been sticking? must you not have been sticking? must they not have been sticking?