must rationalize
Regular verb: rationalize - rationalized- rationalized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must rationalize
you must rationalize
he must rationalize
we must rationalize
you must rationalize
they must rationalize 	I must be rationalizing
you must be rationalizing
he must be rationalizing
we must be rationalizing
you must be rationalizing
they must be rationalizing	I must have rationalized
you must have rationalized
he must have rationalized
we must have rationalized
you must have rationalized
they must have rationalized	I must have been rationalizing
you must have been rationalizing
he must have been rationalizing
we must have been rationalizing
you must have been rationalizing
they must have been rationalizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't rationalize
you mustn't rationalize
he mustn't rationalize
we mustn't rationalize
you mustn't rationalize
they mustn't rationalize 	I mustn't be rationalizing
you mustn't be rationalizing
he mustn't be rationalizing
we mustn't be rationalizing
you mustn't be rationalizing
they mustn't be rationalizing	I mustn't have rationalized
you mustn't have rationalized
he mustn't have rationalized
we mustn't have rationalized
you mustn't have rationalized
they mustn't have rationalized	I mustn't have been rationalizing
you mustn't have been rationalizing
he mustn't have been rationalizing
we mustn't have been rationalizing
you mustn't have been rationalizing
they mustn't have been rationalizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I rationalize?
must you rationalize?
must he rationalize?
must we rationalize?
must you rationalize?
must they rationalize? 	must I be rationalizing?
must you be rationalizing?
must he be rationalizing?
must we be rationalizing?
must you be rationalizing?
must they be rationalizing? 	must I have rationalized?
must you have rationalized?
must he have rationalized?
must we have rationalized?
must you have rationalized?
must they have rationalized? 	must I have been rationalizing?
must you have been rationalizing?
must he have been rationalizing?
must we have been rationalizing?
must you have been rationalizing?
must they have been rationalizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I rationalize?
mustn't you rationalize?
mustn't he rationalize?
mustn't we rationalize?
mustn't you rationalize?
mustn't they rationalize? 	mustn't I be rationalizing?
mustn't you be rationalizing?
mustn't he be rationalizing?
mustn't we be rationalizing?
mustn't you be rationalizing?
mustn't they be rationalizing? 	mustn't I have rationalized?
mustn't you have rationalized?
mustn't he have rationalized?
mustn't we have rationalized?
mustn't you have rationalized?
mustn't they have rationalized? 	mustn't I have been rationalizing?
mustn't you have been rationalizing?
mustn't he have been rationalizing?
mustn't we have been rationalizing?
mustn't you have been rationalizing?
mustn't they have been rationalizing?