must lead
Verbo irregular: lead - led- led

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must lead
you must lead
he must lead
we must lead
you must lead
they must lead 	I must be leading
you must be leading
he must be leading
we must be leading
you must be leading
they must be leading	I must have led
you must have led
he 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
he must have been leading
we must have been leading
you must have been leading
they must have been leading	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't lead
you mustn't lead
he 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
he 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
he 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
he mustn't have been leading
we mustn't have been leading
you mustn't have been leading
they mustn't have been leading	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I lead?
must you lead?
must he lead?
must we lead?
must you lead?
must they lead? 	must I be leading?
must you be leading?
must he be leading?
must we be leading?
must you be leading?
must they be leading? 	must I have led?
must you have led?
must he 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 he have been leading?
must we have been leading?
must you have been leading?
must they have been leading? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I lead?
mustn't you lead?
mustn't he 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 he 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 he 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 he have been leading?
mustn't we have been leading?
mustn't you have been leading?
mustn't they have been leading?