I must gaff you must gaff she must gaff we must gaff you must gaff they must gaff
Forme en V-ing
I must be gaffing you must be gaffing she must be gaffing we must be gaffing you must be gaffing they must be gaffing
Perfect
I must have gaffed you must have gaffed she must have gaffed we must have gaffed you must have gaffed they must have gaffed
Perfect en V-ing
I must have been gaffing you must have been gaffing she must have been gaffing we must have been gaffing you must have been gaffing they must have been gaffing
Négation
Forme simple
I mustn't gaff you mustn't gaff she mustn't gaff we mustn't gaff you mustn't gaff they mustn't gaff
Forme en V-ing
I mustn't be gaffing you mustn't be gaffing she mustn't be gaffing we mustn't be gaffing you mustn't be gaffing they mustn't be gaffing
Perfect
I mustn't have gaffed you mustn't have gaffed she mustn't have gaffed we mustn't have gaffed you mustn't have gaffed they mustn't have gaffed
Perfect en V-ing
I mustn't have been gaffing you mustn't have been gaffing she mustn't have been gaffing we mustn't have been gaffing you mustn't have been gaffing they mustn't have been gaffing
Forme interrogative
Forme simple
must I gaff? must you gaff? must she gaff? must we gaff? must you gaff? must they gaff?
Forme en V-ing
must I be gaffing? must you be gaffing? must she be gaffing? must we be gaffing? must you be gaffing? must they be gaffing?
Perfect
must I have gaffed? must you have gaffed? must she have gaffed? must we have gaffed? must you have gaffed? must they have gaffed?
Perfect en V-ing
must I have been gaffing? must you have been gaffing? must she have been gaffing? must we have been gaffing? must you have been gaffing? must they have been gaffing?
Forme interro-négative
Forme simple
mustn't I gaff? mustn't you gaff? mustn't she gaff? mustn't we gaff? mustn't you gaff? mustn't they gaff?
Forme en V-ing
mustn't I be gaffing? mustn't you be gaffing? mustn't she be gaffing? mustn't we be gaffing? mustn't you be gaffing? mustn't they be gaffing?
Perfect
mustn't I have gaffed? mustn't you have gaffed? mustn't she have gaffed? mustn't we have gaffed? mustn't you have gaffed? mustn't they have gaffed?
Perfect en V-ing
mustn't I have been gaffing? mustn't you have been gaffing? mustn't she have been gaffing? mustn't we have been gaffing? mustn't you have been gaffing? mustn't they have been gaffing?