must agree
Regular verb: agree - agreed- agreed

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