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 mustn't post you mustn't post he mustn't post we mustn't post you mustn't post they mustn't post	I mustn't be posting you mustn't be posting he mustn't be posting we mustn't be posting you mustn't be posting they mustn't be posting
Perfect	V-ing perfect
I mustn't have posted you mustn't have posted he mustn't have posted we mustn't have posted you mustn't have posted they mustn't have posted	I mustn't have been posting you mustn't have been posting he mustn't have been posting we mustn't have been posting you mustn't have been posting they mustn't 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
mustn't I post? mustn't you post? mustn't he post? mustn't we post? mustn't you post? mustn't they post?	mustn't I be posting? mustn't you be posting? mustn't he be posting? mustn't we be posting? mustn't you be posting? mustn't they be posting?
Perfect	V-ing perfect
mustn't I have posted? mustn't you have posted? mustn't he have posted? mustn't we have posted? mustn't you have posted? mustn't they have posted?	mustn't I have been posting? mustn't you have been posting? mustn't he have been posting? mustn't we have been posting? mustn't you have been posting? mustn't they have been posting?