could regress
Verbe régulier : regress - regressed- regressed
Traduction française : régresser - reculer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could regress
you could regress
she could regress
we could regress
you could regress
they could regress 	I could be regressing
you could be regressing
she could be regressing
we could be regressing
you could be regressing
they could be regressing	I could have regressed
you could have regressed
she could have regressed
we could have regressed
you could have regressed
they could have regressed	I could have been regressing
you could have been regressing
she could have been regressing
we could have been regressing
you could have been regressing
they could have been regressing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't regress
you couldn't regress
she couldn't regress
we couldn't regress
you couldn't regress
they couldn't regress 	I couldn't be regressing
you couldn't be regressing
she couldn't be regressing
we couldn't be regressing
you couldn't be regressing
they couldn't be regressing	I couldn't have regressed
you couldn't have regressed
she couldn't have regressed
we couldn't have regressed
you couldn't have regressed
they couldn't have regressed	I couldn't have been regressing
you couldn't have been regressing
she couldn't have been regressing
we couldn't have been regressing
you couldn't have been regressing
they couldn't have been regressing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I regress?
could you regress?
could she regress?
could we regress?
could you regress?
could they regress? 	could I be regressing?
could you be regressing?
could she be regressing?
could we be regressing?
could you be regressing?
could they be regressing? 	could I have regressed?
could you have regressed?
could she have regressed?
could we have regressed?
could you have regressed?
could they have regressed? 	could I have been regressing?
could you have been regressing?
could she have been regressing?
could we have been regressing?
could you have been regressing?
could they have been regressing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I regress?
couldn't you regress?
couldn't she regress?
couldn't we regress?
couldn't you regress?
couldn't they regress? 	couldn't I be regressing?
couldn't you be regressing?
couldn't she be regressing?
couldn't we be regressing?
couldn't you be regressing?
couldn't they be regressing? 	couldn't I have regressed?
couldn't you have regressed?
couldn't she have regressed?
couldn't we have regressed?
couldn't you have regressed?
couldn't they have regressed? 	couldn't I have been regressing?
couldn't you have been regressing?
couldn't she have been regressing?
couldn't we have been regressing?
couldn't you have been regressing?
couldn't they have been regressing?