I must erect you must erect she must erect we must erect you must erect they must erect
Forma con V-ing
I must be erecting you must be erecting she must be erecting we must be erecting you must be erecting they must be erecting
Perfecto
I must have erected you must have erected she must have erected we must have erected you must have erected they must have erected
Perfecto con V-ing
I must have been erecting you must have been erecting she must have been erecting we must have been erecting you must have been erecting they must have been erecting
Negación
Forma simple
I mustn't erect you mustn't erect she mustn't erect we mustn't erect you mustn't erect they mustn't erect
Forma con V-ing
I mustn't be erecting you mustn't be erecting she mustn't be erecting we mustn't be erecting you mustn't be erecting they mustn't be erecting
Perfecto
I mustn't have erected you mustn't have erected she mustn't have erected we mustn't have erected you mustn't have erected they mustn't have erected
Perfecto con V-ing
I mustn't have been erecting you mustn't have been erecting she mustn't have been erecting we mustn't have been erecting you mustn't have been erecting they mustn't have been erecting
Forma interrogativa
Forma simple
must I erect? must you erect? must she erect? must we erect? must you erect? must they erect?
Forma con V-ing
must I be erecting? must you be erecting? must she be erecting? must we be erecting? must you be erecting? must they be erecting?
Perfecto
must I have erected? must you have erected? must she have erected? must we have erected? must you have erected? must they have erected?
Perfecto con V-ing
must I have been erecting? must you have been erecting? must she have been erecting? must we have been erecting? must you have been erecting? must they have been erecting?
Forma interro-negativa
Forma simple
mustn't I erect? mustn't you erect? mustn't she erect? mustn't we erect? mustn't you erect? mustn't they erect?
Forma con V-ing
mustn't I be erecting? mustn't you be erecting? mustn't she be erecting? mustn't we be erecting? mustn't you be erecting? mustn't they be erecting?
Perfecto
mustn't I have erected? mustn't you have erected? mustn't she have erected? mustn't we have erected? mustn't you have erected? mustn't they have erected?
Perfecto con V-ing
mustn't I have been erecting? mustn't you have been erecting? mustn't she have been erecting? mustn't we have been erecting? mustn't you have been erecting? mustn't they have been erecting?