English verb conjugation
MUST AGREE

Regular verb: agree - agreed - agreed

Affirmation

Simple form	V-ing form
I must agree you must agree he must agree we must agree you must agree they must agree	I must be agreeing you must be agreeing he must be agreeing we must be agreeing you must be agreeing they must be agreeing
Perfect	V-ing perfect
I must have agreed you must have agreed he must have agreed we must have agreed you must have agreed they must have agreed	I must have been agreeing you must have been agreeing he must have been agreeing we must have been agreeing you must have been agreeing they must have been agreeing

Negation

Simple form	V-ing form
I must not agree you must not agree he must not agree we must not agree you must not agree they must not agree	I must not be agreeing you must not be agreeing he must not be agreeing we must not be agreeing you must not be agreeing they must not be agreeing
Perfect	V-ing perfect
I must not have agreed you must not have agreed he must not have agreed we must not have agreed you must not have agreed they must not have agreed	I must not have been agreeing you must not have been agreeing he must not have been agreeing we must not have been agreeing you must not have been agreeing they must not have been agreeing

Interrogative form

Simple form	V-ing form
must I agree? must you agree? must he agree? must we agree? must you agree? must they agree?	must I be agreeing? must you be agreeing? must he be agreeing? must we be agreeing? must you be agreeing? must they be agreeing?
Perfect	V-ing perfect
must I have agreed? must you have agreed? must he have agreed? must we have agreed? must you have agreed? must they have agreed?	must I have been agreeing? must you have been agreeing? must he have been agreeing? must we have been agreeing? must you have been agreeing? must they have been agreeing?

Interro-negative form

Simple form	V-ing form
must I not agree? must you not agree? must he not agree? must we not agree? must you not agree? must they not agree?	must I not be agreeing? must you not be agreeing? must he not be agreeing? must we not be agreeing? must you not be agreeing? must they not be agreeing?
Perfect	V-ing perfect
must I not have agreed? must you not have agreed? must he not have agreed? must we not have agreed? must you not have agreed? must they not have agreed?	must I not have been agreeing? must you not have been agreeing? must he not have been agreeing? must we not have been agreeing? must you not have been agreeing? must they not have been agreeing?