must lead
Verbe irrégulier : lead - led- led
Traduction française : mener 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must lead
you must lead
she must lead
we must lead
you must lead
they must lead 	I must be leading
you must be leading
she must be leading
we must be leading
you must be leading
they must be leading	I must have led
you must have led
she must have led
we must have led
you must have led
they must have led	I must have been leading
you must have been leading
she must have been leading
we must have been leading
you must have been leading
they must have been leading	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't lead
you mustn't lead
she mustn't lead
we mustn't lead
you mustn't lead
they mustn't lead 	I mustn't be leading
you mustn't be leading
she mustn't be leading
we mustn't be leading
you mustn't be leading
they mustn't be leading	I mustn't have led
you mustn't have led
she mustn't have led
we mustn't have led
you mustn't have led
they mustn't have led	I mustn't have been leading
you mustn't have been leading
she mustn't have been leading
we mustn't have been leading
you mustn't have been leading
they mustn't have been leading	

Forme interrogative 	
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must I lead?
must you lead?
must she lead?
must we lead?
must you lead?
must they lead? 	must I be leading?
must you be leading?
must she be leading?
must we be leading?
must you be leading?
must they be leading? 	must I have led?
must you have led?
must she have led?
must we have led?
must you have led?
must they have led? 	must I have been leading?
must you have been leading?
must she have been leading?
must we have been leading?
must you have been leading?
must they have been leading? 	

Forme interro-négative 	
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mustn't I lead?
mustn't you lead?
mustn't she lead?
mustn't we lead?
mustn't you lead?
mustn't they lead? 	mustn't I be leading?
mustn't you be leading?
mustn't she be leading?
mustn't we be leading?
mustn't you be leading?
mustn't they be leading? 	mustn't I have led?
mustn't you have led?
mustn't she have led?
mustn't we have led?
mustn't you have led?
mustn't they have led? 	mustn't I have been leading?
mustn't you have been leading?
mustn't she have been leading?
mustn't we have been leading?
mustn't you have been leading?
mustn't they have been leading?