I must perfuse you must perfuse he must perfuse we must perfuse you must perfuse they must perfuse
Forme en V-ing
I must be perfusing you must be perfusing he must be perfusing we must be perfusing you must be perfusing they must be perfusing
Perfect
I must have perfused you must have perfused he must have perfused we must have perfused you must have perfused they must have perfused
Perfect en V-ing
I must have been perfusing you must have been perfusing he must have been perfusing we must have been perfusing you must have been perfusing they must have been perfusing
Négation
Forme simple
I mustn't perfuse you mustn't perfuse he mustn't perfuse we mustn't perfuse you mustn't perfuse they mustn't perfuse
Forme en V-ing
I mustn't be perfusing you mustn't be perfusing he mustn't be perfusing we mustn't be perfusing you mustn't be perfusing they mustn't be perfusing
Perfect
I mustn't have perfused you mustn't have perfused he mustn't have perfused we mustn't have perfused you mustn't have perfused they mustn't have perfused
Perfect en V-ing
I mustn't have been perfusing you mustn't have been perfusing he mustn't have been perfusing we mustn't have been perfusing you mustn't have been perfusing they mustn't have been perfusing
Forme interrogative
Forme simple
must I perfuse? must you perfuse? must he perfuse? must we perfuse? must you perfuse? must they perfuse?
Forme en V-ing
must I be perfusing? must you be perfusing? must he be perfusing? must we be perfusing? must you be perfusing? must they be perfusing?
Perfect
must I have perfused? must you have perfused? must he have perfused? must we have perfused? must you have perfused? must they have perfused?
Perfect en V-ing
must I have been perfusing? must you have been perfusing? must he have been perfusing? must we have been perfusing? must you have been perfusing? must they have been perfusing?
Forme interro-négative
Forme simple
mustn't I perfuse? mustn't you perfuse? mustn't he perfuse? mustn't we perfuse? mustn't you perfuse? mustn't they perfuse?
Forme en V-ing
mustn't I be perfusing? mustn't you be perfusing? mustn't he be perfusing? mustn't we be perfusing? mustn't you be perfusing? mustn't they be perfusing?
Perfect
mustn't I have perfused? mustn't you have perfused? mustn't he have perfused? mustn't we have perfused? mustn't you have perfused? mustn't they have perfused?
Perfect en V-ing
mustn't I have been perfusing? mustn't you have been perfusing? mustn't he have been perfusing? mustn't we have been perfusing? mustn't you have been perfusing? mustn't they have been perfusing?