must masticate
Regular verb: masticate - masticated- masticated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must masticate
you must masticate
she must masticate
we must masticate
you must masticate
they must masticate 	I must be masticating
you must be masticating
she must be masticating
we must be masticating
you must be masticating
they must be masticating	I must have masticated
you must have masticated
she 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
she 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 must not masticate
you must not masticate
she must not masticate
we must not masticate
you must not masticate
they must not masticate 	I must not be masticating
you must not be masticating
she must not be masticating
we must not be masticating
you must not be masticating
they must not be masticating	I must not have masticated
you must not have masticated
she must not have masticated
we must not have masticated
you must not have masticated
they must not have masticated	I must not have been masticating
you must not have been masticating
she must not have been masticating
we must not have been masticating
you must not have been masticating
they must not have been masticating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I masticate?
must you masticate?
must she masticate?
must we masticate?
must you masticate?
must they masticate? 	must I be masticating?
must you be masticating?
must she be masticating?
must we be masticating?
must you be masticating?
must they be masticating? 	must I have masticated?
must you have masticated?
must she 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 she 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 	
must I not masticate?
must you not masticate?
must she not masticate?
must we not masticate?
must you not masticate?
must they not masticate? 	must I not be masticating?
must you not be masticating?
must she not be masticating?
must we not be masticating?
must you not be masticating?
must they not be masticating? 	must I not have masticated?
must you not have masticated?
must she not have masticated?
must we not have masticated?
must you not have masticated?
must they not have masticated? 	must I not have been masticating?
must you not have been masticating?
must she not have been masticating?
must we not have been masticating?
must you not have been masticating?
must they not have been masticating?