must agree
Regular verb: agree - agreed- agreed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
I mustn't agree
you mustn't agree
he mustn't agree
we mustn't agree
you mustn't agree
they mustn't agree 	I mustn't be agreeing
you mustn't be agreeing
he mustn't be agreeing
we mustn't be agreeing
you mustn't be agreeing
they mustn't be agreeing	I mustn't have agreed
you mustn't have agreed
he mustn't have agreed
we mustn't have agreed
you mustn't have agreed
they mustn't have agreed	I mustn't have been agreeing
you mustn't have been agreeing
he mustn't have been agreeing
we mustn't have been agreeing
you mustn't have been agreeing
they mustn't have been agreeing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
mustn't I agree?
mustn't you agree?
mustn't he agree?
mustn't we agree?
mustn't you agree?
mustn't they agree? 	mustn't I be agreeing?
mustn't you be agreeing?
mustn't he be agreeing?
mustn't we be agreeing?
mustn't you be agreeing?
mustn't they be agreeing? 	mustn't I have agreed?
mustn't you have agreed?
mustn't he have agreed?
mustn't we have agreed?
mustn't you have agreed?
mustn't they have agreed? 	mustn't I have been agreeing?
mustn't you have been agreeing?
mustn't he have been agreeing?
mustn't we have been agreeing?
mustn't you have been agreeing?
mustn't they have been agreeing?