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