must rack
Verbe régulier : rack - racked- racked
Traduction française : faire subir le supplice du chevalet à - soutirer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must rack
you must rack
she must rack
we must rack
you must rack
they must rack 	I must be racking
you must be racking
she must be racking
we must be racking
you must be racking
they must be racking	I must have racked
you must have racked
she must have racked
we must have racked
you must have racked
they must have racked	I must have been racking
you must have been racking
she must have been racking
we must have been racking
you must have been racking
they must have been racking	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't rack
you mustn't rack
she mustn't rack
we mustn't rack
you mustn't rack
they mustn't rack 	I mustn't be racking
you mustn't be racking
she mustn't be racking
we mustn't be racking
you mustn't be racking
they mustn't be racking	I mustn't have racked
you mustn't have racked
she mustn't have racked
we mustn't have racked
you mustn't have racked
they mustn't have racked	I mustn't have been racking
you mustn't have been racking
she mustn't have been racking
we mustn't have been racking
you mustn't have been racking
they mustn't have been racking	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I rack?
must you rack?
must she rack?
must we rack?
must you rack?
must they rack? 	must I be racking?
must you be racking?
must she be racking?
must we be racking?
must you be racking?
must they be racking? 	must I have racked?
must you have racked?
must she have racked?
must we have racked?
must you have racked?
must they have racked? 	must I have been racking?
must you have been racking?
must she have been racking?
must we have been racking?
must you have been racking?
must they have been racking? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I rack?
mustn't you rack?
mustn't she rack?
mustn't we rack?
mustn't you rack?
mustn't they rack? 	mustn't I be racking?
mustn't you be racking?
mustn't she be racking?
mustn't we be racking?
mustn't you be racking?
mustn't they be racking? 	mustn't I have racked?
mustn't you have racked?
mustn't she have racked?
mustn't we have racked?
mustn't you have racked?
mustn't they have racked? 	mustn't I have been racking?
mustn't you have been racking?
mustn't she have been racking?
mustn't we have been racking?
mustn't you have been racking?
mustn't they have been racking?