could decongest
Verbe régulier : decongest - decongested- decongested

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

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not decongest
you could not decongest
he could not decongest
we could not decongest
you could not decongest
they could not decongest 	I could not be decongesting
you could not be decongesting
he could not be decongesting
we could not be decongesting
you could not be decongesting
they could not be decongesting	I could not have decongested
you could not have decongested
he could not have decongested
we could not have decongested
you could not have decongested
they could not have decongested	I could not have been decongesting
you could not have been decongesting
he could not have been decongesting
we could not have been decongesting
you could not have been decongesting
they could not have been decongesting	

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

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