must masticate
Regular verb: masticate - masticated- masticated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must masticate
you must masticate
he must masticate
we must masticate
you must masticate
they must masticate 	I must be masticating
you must be masticating
he must be masticating
we must be masticating
you must be masticating
they must be masticating	I must have masticated
you must have masticated
he must have masticated
we must have masticated
you must have masticated
they must have masticated	I must have been masticating
you must have been masticating
he must have been masticating
we must have been masticating
you must have been masticating
they must have been masticating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't masticate
you mustn't masticate
he mustn't masticate
we mustn't masticate
you mustn't masticate
they mustn't masticate 	I mustn't be masticating
you mustn't be masticating
he mustn't be masticating
we mustn't be masticating
you mustn't be masticating
they mustn't be masticating	I mustn't have masticated
you mustn't have masticated
he mustn't have masticated
we mustn't have masticated
you mustn't have masticated
they mustn't have masticated	I mustn't have been masticating
you mustn't have been masticating
he mustn't have been masticating
we mustn't have been masticating
you mustn't have been masticating
they mustn't have been masticating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I masticate?
must you masticate?
must he masticate?
must we masticate?
must you masticate?
must they masticate? 	must I be masticating?
must you be masticating?
must he be masticating?
must we be masticating?
must you be masticating?
must they be masticating? 	must I have masticated?
must you have masticated?
must he have masticated?
must we have masticated?
must you have masticated?
must they have masticated? 	must I have been masticating?
must you have been masticating?
must he have been masticating?
must we have been masticating?
must you have been masticating?
must they have been masticating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I masticate?
mustn't you masticate?
mustn't he masticate?
mustn't we masticate?
mustn't you masticate?
mustn't they masticate? 	mustn't I be masticating?
mustn't you be masticating?
mustn't he be masticating?
mustn't we be masticating?
mustn't you be masticating?
mustn't they be masticating? 	mustn't I have masticated?
mustn't you have masticated?
mustn't he have masticated?
mustn't we have masticated?
mustn't you have masticated?
mustn't they have masticated? 	mustn't I have been masticating?
mustn't you have been masticating?
mustn't he have been masticating?
mustn't we have been masticating?
mustn't you have been masticating?
mustn't they have been masticating?