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