must decongest
Verbe régulier : decongest - decongested- decongested

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must decongest
you must decongest
he must decongest
we must decongest
you must decongest
they must decongest 	I must be decongesting
you must be decongesting
he must be decongesting
we must be decongesting
you must be decongesting
they must be decongesting	I must have decongested
you must have decongested
he must have decongested
we must have decongested
you must have decongested
they must have decongested	I must have been decongesting
you must have been decongesting
he must have been decongesting
we must have been decongesting
you must have been decongesting
they must have been decongesting	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't decongest
you mustn't decongest
he mustn't decongest
we mustn't decongest
you mustn't decongest
they mustn't decongest 	I mustn't be decongesting
you mustn't be decongesting
he mustn't be decongesting
we mustn't be decongesting
you mustn't be decongesting
they mustn't be decongesting	I mustn't have decongested
you mustn't have decongested
he mustn't have decongested
we mustn't have decongested
you mustn't have decongested
they mustn't have decongested	I mustn't have been decongesting
you mustn't have been decongesting
he mustn't have been decongesting
we mustn't have been decongesting
you mustn't have been decongesting
they mustn't have been decongesting	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I decongest?
must you decongest?
must he decongest?
must we decongest?
must you decongest?
must they decongest? 	must I be decongesting?
must you be decongesting?
must he be decongesting?
must we be decongesting?
must you be decongesting?
must they be decongesting? 	must I have decongested?
must you have decongested?
must he have decongested?
must we have decongested?
must you have decongested?
must they have decongested? 	must I have been decongesting?
must you have been decongesting?
must he have been decongesting?
must we have been decongesting?
must you have been decongesting?
must they have been decongesting? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I decongest?
mustn't you decongest?
mustn't he decongest?
mustn't we decongest?
mustn't you decongest?
mustn't they decongest? 	mustn't I be decongesting?
mustn't you be decongesting?
mustn't he be decongesting?
mustn't we be decongesting?
mustn't you be decongesting?
mustn't they be decongesting? 	mustn't I have decongested?
mustn't you have decongested?
mustn't he have decongested?
mustn't we have decongested?
mustn't you have decongested?
mustn't they have decongested? 	mustn't I have been decongesting?
mustn't you have been decongesting?
mustn't he have been decongesting?
mustn't we have been decongesting?
mustn't you have been decongesting?
mustn't they have been decongesting?