I must fester you must fester he must fester we must fester you must fester they must fester
Forme en V-ing
I must be festering you must be festering he must be festering we must be festering you must be festering they must be festering
Perfect
I must have festered you must have festered he must have festered we must have festered you must have festered they must have festered
Perfect en V-ing
I must have been festering you must have been festering he must have been festering we must have been festering you must have been festering they must have been festering
Négation
Forme simple
I must not fester you must not fester he must not fester we must not fester you must not fester they must not fester
Forme en V-ing
I must not be festering you must not be festering he must not be festering we must not be festering you must not be festering they must not be festering
Perfect
I must not have festered you must not have festered he must not have festered we must not have festered you must not have festered they must not have festered
Perfect en V-ing
I must not have been festering you must not have been festering he must not have been festering we must not have been festering you must not have been festering they must not have been festering
Forme interrogative
Forme simple
must I fester? must you fester? must he fester? must we fester? must you fester? must they fester?
Forme en V-ing
must I be festering? must you be festering? must he be festering? must we be festering? must you be festering? must they be festering?
Perfect
must I have festered? must you have festered? must he have festered? must we have festered? must you have festered? must they have festered?
Perfect en V-ing
must I have been festering? must you have been festering? must he have been festering? must we have been festering? must you have been festering? must they have been festering?
Forme interro-négative
Forme simple
must I not fester? must you not fester? must he not fester? must we not fester? must you not fester? must they not fester?
Forme en V-ing
must I not be festering? must you not be festering? must he not be festering? must we not be festering? must you not be festering? must they not be festering?
Perfect
must I not have festered? must you not have festered? must he not have festered? must we not have festered? must you not have festered? must they not have festered?
Perfect en V-ing
must I not have been festering? must you not have been festering? must he not have been festering? must we not have been festering? must you not have been festering? must they not have been festering?