must muck
Verbe régulier : muck - mucked- mucked
Traduction française : fumer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must muck
you must muck
she must muck
we must muck
you must muck
they must muck 	I must be mucking
you must be mucking
she must be mucking
we must be mucking
you must be mucking
they must be mucking	I must have mucked
you must have mucked
she must have mucked
we must have mucked
you must have mucked
they must have mucked	I must have been mucking
you must have been mucking
she must have been mucking
we must have been mucking
you must have been mucking
they must have been mucking	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't muck
you mustn't muck
she mustn't muck
we mustn't muck
you mustn't muck
they mustn't muck 	I mustn't be mucking
you mustn't be mucking
she mustn't be mucking
we mustn't be mucking
you mustn't be mucking
they mustn't be mucking	I mustn't have mucked
you mustn't have mucked
she mustn't have mucked
we mustn't have mucked
you mustn't have mucked
they mustn't have mucked	I mustn't have been mucking
you mustn't have been mucking
she mustn't have been mucking
we mustn't have been mucking
you mustn't have been mucking
they mustn't have been mucking	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I muck?
must you muck?
must she muck?
must we muck?
must you muck?
must they muck? 	must I be mucking?
must you be mucking?
must she be mucking?
must we be mucking?
must you be mucking?
must they be mucking? 	must I have mucked?
must you have mucked?
must she have mucked?
must we have mucked?
must you have mucked?
must they have mucked? 	must I have been mucking?
must you have been mucking?
must she have been mucking?
must we have been mucking?
must you have been mucking?
must they have been mucking? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I muck?
mustn't you muck?
mustn't she muck?
mustn't we muck?
mustn't you muck?
mustn't they muck? 	mustn't I be mucking?
mustn't you be mucking?
mustn't she be mucking?
mustn't we be mucking?
mustn't you be mucking?
mustn't they be mucking? 	mustn't I have mucked?
mustn't you have mucked?
mustn't she have mucked?
mustn't we have mucked?
mustn't you have mucked?
mustn't they have mucked? 	mustn't I have been mucking?
mustn't you have been mucking?
mustn't she have been mucking?
mustn't we have been mucking?
mustn't you have been mucking?
mustn't they have been mucking?