I must educate you must educate he must educate we must educate you must educate they must educate
V-ing form
I must be educating you must be educating he must be educating we must be educating you must be educating they must be educating
Perfect
I must have educated you must have educated he must have educated we must have educated you must have educated they must have educated
V-ing perfect
I must have been educating you must have been educating he must have been educating we must have been educating you must have been educating they must have been educating
Negation
Simple form
I must not educate you must not educate he must not educate we must not educate you must not educate they must not educate
V-ing form
I must not be educating you must not be educating he must not be educating we must not be educating you must not be educating they must not be educating
Perfect
I must not have educated you must not have educated he must not have educated we must not have educated you must not have educated they must not have educated
V-ing perfect
I must not have been educating you must not have been educating he must not have been educating we must not have been educating you must not have been educating they must not have been educating
Interrogative form
Simple form
must I educate? must you educate? must he educate? must we educate? must you educate? must they educate?
V-ing form
must I be educating? must you be educating? must he be educating? must we be educating? must you be educating? must they be educating?
Perfect
must I have educated? must you have educated? must he have educated? must we have educated? must you have educated? must they have educated?
V-ing perfect
must I have been educating? must you have been educating? must he have been educating? must we have been educating? must you have been educating? must they have been educating?
Interro-negative form
Simple form
must I not educate? must you not educate? must he not educate? must we not educate? must you not educate? must they not educate?
V-ing form
must I not be educating? must you not be educating? must he not be educating? must we not be educating? must you not be educating? must they not be educating?
Perfect
must I not have educated? must you not have educated? must he not have educated? must we not have educated? must you not have educated? must they not have educated?
V-ing perfect
must I not have been educating? must you not have been educating? must he not have been educating? must we not have been educating? must you not have been educating? must they not have been educating?