must prim
Regular verb: prim - primmed- primmed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must prim
you must prim
she must prim
we must prim
you must prim
they must prim 	I must be primming
you must be primming
she must be primming
we must be primming
you must be primming
they must be primming	I must have primmed
you must have primmed
she must have primmed
we must have primmed
you must have primmed
they must have primmed	I must have been primming
you must have been primming
she must have been primming
we must have been primming
you must have been primming
they must have been primming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't prim
you mustn't prim
she mustn't prim
we mustn't prim
you mustn't prim
they mustn't prim 	I mustn't be primming
you mustn't be primming
she mustn't be primming
we mustn't be primming
you mustn't be primming
they mustn't be primming	I mustn't have primmed
you mustn't have primmed
she mustn't have primmed
we mustn't have primmed
you mustn't have primmed
they mustn't have primmed	I mustn't have been primming
you mustn't have been primming
she mustn't have been primming
we mustn't have been primming
you mustn't have been primming
they mustn't have been primming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I prim?
must you prim?
must she prim?
must we prim?
must you prim?
must they prim? 	must I be primming?
must you be primming?
must she be primming?
must we be primming?
must you be primming?
must they be primming? 	must I have primmed?
must you have primmed?
must she have primmed?
must we have primmed?
must you have primmed?
must they have primmed? 	must I have been primming?
must you have been primming?
must she have been primming?
must we have been primming?
must you have been primming?
must they have been primming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I prim?
mustn't you prim?
mustn't she prim?
mustn't we prim?
mustn't you prim?
mustn't they prim? 	mustn't I be primming?
mustn't you be primming?
mustn't she be primming?
mustn't we be primming?
mustn't you be primming?
mustn't they be primming? 	mustn't I have primmed?
mustn't you have primmed?
mustn't she have primmed?
mustn't we have primmed?
mustn't you have primmed?
mustn't they have primmed? 	mustn't I have been primming?
mustn't you have been primming?
mustn't she have been primming?
mustn't we have been primming?
mustn't you have been primming?
mustn't they have been primming?