must overmuster
Regular verb: overmuster - overmustered- overmustered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must overmuster
you must overmuster
she must overmuster
we must overmuster
you must overmuster
they must overmuster 	I must be overmustering
you must be overmustering
she must be overmustering
we must be overmustering
you must be overmustering
they must be overmustering	I must have overmustered
you must have overmustered
she must have overmustered
we must have overmustered
you must have overmustered
they must have overmustered	I must have been overmustering
you must have been overmustering
she must have been overmustering
we must have been overmustering
you must have been overmustering
they must have been overmustering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't overmuster
you mustn't overmuster
she mustn't overmuster
we mustn't overmuster
you mustn't overmuster
they mustn't overmuster 	I mustn't be overmustering
you mustn't be overmustering
she mustn't be overmustering
we mustn't be overmustering
you mustn't be overmustering
they mustn't be overmustering	I mustn't have overmustered
you mustn't have overmustered
she mustn't have overmustered
we mustn't have overmustered
you mustn't have overmustered
they mustn't have overmustered	I mustn't have been overmustering
you mustn't have been overmustering
she mustn't have been overmustering
we mustn't have been overmustering
you mustn't have been overmustering
they mustn't have been overmustering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I overmuster?
must you overmuster?
must she overmuster?
must we overmuster?
must you overmuster?
must they overmuster? 	must I be overmustering?
must you be overmustering?
must she be overmustering?
must we be overmustering?
must you be overmustering?
must they be overmustering? 	must I have overmustered?
must you have overmustered?
must she have overmustered?
must we have overmustered?
must you have overmustered?
must they have overmustered? 	must I have been overmustering?
must you have been overmustering?
must she have been overmustering?
must we have been overmustering?
must you have been overmustering?
must they have been overmustering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I overmuster?
mustn't you overmuster?
mustn't she overmuster?
mustn't we overmuster?
mustn't you overmuster?
mustn't they overmuster? 	mustn't I be overmustering?
mustn't you be overmustering?
mustn't she be overmustering?
mustn't we be overmustering?
mustn't you be overmustering?
mustn't they be overmustering? 	mustn't I have overmustered?
mustn't you have overmustered?
mustn't she have overmustered?
mustn't we have overmustered?
mustn't you have overmustered?
mustn't they have overmustered? 	mustn't I have been overmustering?
mustn't you have been overmustering?
mustn't she have been overmustering?
mustn't we have been overmustering?
mustn't you have been overmustering?
mustn't they have been overmustering?