must pumice
Regular verb: pumice - pumiced- pumiced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must pumice
you must pumice
she must pumice
we must pumice
you must pumice
they must pumice 	I must be pumicing
you must be pumicing
she must be pumicing
we must be pumicing
you must be pumicing
they must be pumicing	I must have pumiced
you must have pumiced
she must have pumiced
we must have pumiced
you must have pumiced
they must have pumiced	I must have been pumicing
you must have been pumicing
she must have been pumicing
we must have been pumicing
you must have been pumicing
they must have been pumicing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't pumice
you mustn't pumice
she mustn't pumice
we mustn't pumice
you mustn't pumice
they mustn't pumice 	I mustn't be pumicing
you mustn't be pumicing
she mustn't be pumicing
we mustn't be pumicing
you mustn't be pumicing
they mustn't be pumicing	I mustn't have pumiced
you mustn't have pumiced
she mustn't have pumiced
we mustn't have pumiced
you mustn't have pumiced
they mustn't have pumiced	I mustn't have been pumicing
you mustn't have been pumicing
she mustn't have been pumicing
we mustn't have been pumicing
you mustn't have been pumicing
they mustn't have been pumicing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I pumice?
must you pumice?
must she pumice?
must we pumice?
must you pumice?
must they pumice? 	must I be pumicing?
must you be pumicing?
must she be pumicing?
must we be pumicing?
must you be pumicing?
must they be pumicing? 	must I have pumiced?
must you have pumiced?
must she have pumiced?
must we have pumiced?
must you have pumiced?
must they have pumiced? 	must I have been pumicing?
must you have been pumicing?
must she have been pumicing?
must we have been pumicing?
must you have been pumicing?
must they have been pumicing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I pumice?
mustn't you pumice?
mustn't she pumice?
mustn't we pumice?
mustn't you pumice?
mustn't they pumice? 	mustn't I be pumicing?
mustn't you be pumicing?
mustn't she be pumicing?
mustn't we be pumicing?
mustn't you be pumicing?
mustn't they be pumicing? 	mustn't I have pumiced?
mustn't you have pumiced?
mustn't she have pumiced?
mustn't we have pumiced?
mustn't you have pumiced?
mustn't they have pumiced? 	mustn't I have been pumicing?
mustn't you have been pumicing?
mustn't she have been pumicing?
mustn't we have been pumicing?
mustn't you have been pumicing?
mustn't they have been pumicing?