must butcher
Regular verb: butcher - butchered- butchered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must butcher
you must butcher
he must butcher
we must butcher
you must butcher
they must butcher 	I must be butchering
you must be butchering
he must be butchering
we must be butchering
you must be butchering
they must be butchering	I must have butchered
you must have butchered
he must have butchered
we must have butchered
you must have butchered
they must have butchered	I must have been butchering
you must have been butchering
he must have been butchering
we must have been butchering
you must have been butchering
they must have been butchering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't butcher
you mustn't butcher
he mustn't butcher
we mustn't butcher
you mustn't butcher
they mustn't butcher 	I mustn't be butchering
you mustn't be butchering
he mustn't be butchering
we mustn't be butchering
you mustn't be butchering
they mustn't be butchering	I mustn't have butchered
you mustn't have butchered
he mustn't have butchered
we mustn't have butchered
you mustn't have butchered
they mustn't have butchered	I mustn't have been butchering
you mustn't have been butchering
he mustn't have been butchering
we mustn't have been butchering
you mustn't have been butchering
they mustn't have been butchering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I butcher?
must you butcher?
must he butcher?
must we butcher?
must you butcher?
must they butcher? 	must I be butchering?
must you be butchering?
must he be butchering?
must we be butchering?
must you be butchering?
must they be butchering? 	must I have butchered?
must you have butchered?
must he have butchered?
must we have butchered?
must you have butchered?
must they have butchered? 	must I have been butchering?
must you have been butchering?
must he have been butchering?
must we have been butchering?
must you have been butchering?
must they have been butchering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I butcher?
mustn't you butcher?
mustn't he butcher?
mustn't we butcher?
mustn't you butcher?
mustn't they butcher? 	mustn't I be butchering?
mustn't you be butchering?
mustn't he be butchering?
mustn't we be butchering?
mustn't you be butchering?
mustn't they be butchering? 	mustn't I have butchered?
mustn't you have butchered?
mustn't he have butchered?
mustn't we have butchered?
mustn't you have butchered?
mustn't they have butchered? 	mustn't I have been butchering?
mustn't you have been butchering?
mustn't he have been butchering?
mustn't we have been butchering?
mustn't you have been butchering?
mustn't they have been butchering?