I must lead you must lead she must lead we must lead you must lead they must lead
Forma con V-ing
I must be leading you must be leading she must be leading we must be leading you must be leading they must be leading
Perfecto
I must have led you must have led she must have led we must have led you must have led they must have led
Perfecto con V-ing
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
Negación
Forma simple
I mustn't lead you mustn't lead she mustn't lead we mustn't lead you mustn't lead they mustn't lead
Forma con V-ing
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
Perfecto
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
Perfecto con V-ing
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
Forma interrogativa
Forma simple
must I lead? must you lead? must she lead? must we lead? must you lead? must they lead?
Forma con V-ing
must I be leading? must you be leading? must she be leading? must we be leading? must you be leading? must they be leading?
Perfecto
must I have led? must you have led? must she have led? must we have led? must you have led? must they have led?
Perfecto con V-ing
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?
Forma interro-negativa
Forma simple
mustn't I lead? mustn't you lead? mustn't she lead? mustn't we lead? mustn't you lead? mustn't they lead?
Forma con V-ing
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?
Perfecto
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?
Perfecto con V-ing
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?