English verb conjugation
MUST POST

Regular verb: post - posted - posted

Affirmation

Simple form	V-ing form
I must post you must post he must post we must post you must post they must post	I must be posting you must be posting he must be posting we must be posting you must be posting they must be posting
Perfect	V-ing perfect
I must have posted you must have posted he must have posted we must have posted you must have posted they must have posted	I must have been posting you must have been posting he must have been posting we must have been posting you must have been posting they must have been posting

Negation

Simple form	V-ing form
I must not post you must not post he must not post we must not post you must not post they must not post	I must not be posting you must not be posting he must not be posting we must not be posting you must not be posting they must not be posting
Perfect	V-ing perfect
I must not have posted you must not have posted he must not have posted we must not have posted you must not have posted they must not have posted	I must not have been posting you must not have been posting he must not have been posting we must not have been posting you must not have been posting they must not have been posting

Interrogative form

Simple form	V-ing form
must I post? must you post? must he post? must we post? must you post? must they post?	must I be posting? must you be posting? must he be posting? must we be posting? must you be posting? must they be posting?
Perfect	V-ing perfect
must I have posted? must you have posted? must he have posted? must we have posted? must you have posted? must they have posted?	must I have been posting? must you have been posting? must he have been posting? must we have been posting? must you have been posting? must they have been posting?

Interro-negative form

Simple form	V-ing form
must I not post? must you not post? must he not post? must we not post? must you not post? must they not post?	must I not be posting? must you not be posting? must he not be posting? must we not be posting? must you not be posting? must they not be posting?
Perfect	V-ing perfect
must I not have posted? must you not have posted? must he not have posted? must we not have posted? must you not have posted? must they not have posted?	must I not have been posting? must you not have been posting? must he not have been posting? must we not have been posting? must you not have been posting? must they not have been posting?